What Is An Oil Catch Can?

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  • Опубликовано: 8 июл 2024
  • What Does An Oil Catch Can Do? What Is An Oil Catch Can?
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    Should you use an oil catch can? During combustion, a small amount of the combustion gases pass the pistons into the crankcase, this is referred to as blowby. This air isn't super clean, and it mixes with the oil in the camber. The positive pressure in the crankcase needs to be vented, which is where the PCV valve comes in. This allows the air, and oil mist, to escape the crankcase, and is usually rerouted back to the intake. This oil can gunk up your intake system, including forming deposits on the intake valves and piston heads. The only downside is that you will have to drain the oil catch can occasionally. Using the system can help prevent carbon deposits, gunk, and reduce the likelihood of knock and pre-ignition by removing oil contaminants introduced in the intake.
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Комментарии • 1 тыс.

  • @ArturKala
    @ArturKala 7 лет назад +1101

    Oil catch can can catch oil.

  • @428ghost
    @428ghost 6 лет назад +29

    CAUTION FOR COLD CLIMATES: disconnect your PCV catch can in the winter. Condensation in cold climates results in a lot of water building up with the sludge in your catch can. The result is the requirement of having to drain the catch can with increased frequency due to fluid build up. In extreme cold (-20C and below) the engine will have to run for quite awhile before the ice inside the catch can melts before you can drain it. A risk with an oil catch can in winter is that ice builds up to the point where there's a blockage in either the can or the line to the can. The result is PCV pressure builds up in the crank case and very bad things can happen to your engine. I've had my valve covers rupture one winter on a -30 C day due to a frozen catch can. You've been warned: not for winter use.

  • @gaborbata8588
    @gaborbata8588 8 лет назад +50

    Nice, clear explanation.
    I'd add a few extras for those curious.
    Historically, crankcases were ventilated to the open air: dripping to the ground, that is. It's environmental thinking that had lead to feeding it back to the intake. (Some engines still have the open tube, like older style lawnmovers.)
    Stock engines also have some sort of separator already built in, that allows oil to condensate and drip back into the head or sump, before drawn in by the intake.
    It's not only the leakage of piston rings that causes crankcase pressure, you also need some ventilation because of the obvious reason of thermal expansion in there, and the movement of the piston(s) themselves.
    (Interestingly, the latter is what's actually utilized in two-strokes, this pressure is intentionally contained there.)
    Speaking of the crankcase gasses, it actually contains a large amount of water vapor. What you can see as gunk in a ventilation system is a tiny amount of oil residue building up over several years.
    In our workshop we've built and tested condensation type cans on a carburettor engine and on an injection one also. It extracted half a litre lightbrownish water quite quickly, so draining the can was really needed. You can still have the benefits of a filter-type can, though, like shown here, as these catch oil particles but let water vapor pass through, as far as I can tell.
    All in all, since most of the oil can be separated (done in the valve cover most often) and water vapor is not harmful, it's considered safe and not having major drawbacks feeding it back to the intake.
    I just hate the look of oil in my engines' intake parts myself :)

    • @youseftawheed2439
      @youseftawheed2439 Год назад +1

      Quick question, my front seal on the crankshaft leaked oil after 400 miles on my brand new ZL1 after the dealership replaced the seal, a buddy of mine recommend to insta that catch to insure that the pressure won't build up again causing the new seal to pop again during speeding or track use. Do you agree that the catch can would help with that issue?

    • @gaborbata8588
      @gaborbata8588 Год назад

      @@youseftawheed2439 Your crankcase shouldn't develop that much pressure to begin with. It typically occurs in old engines with worn-out piston seals and bores. The pressure won't drop with the can installed, unless you disconnect it from the air-intake, and let it breathe openly.

  • @Deathnote0-_-0
    @Deathnote0-_-0 7 лет назад +318

    haha, the best thing I heard: "People are lazy.... Remembering to change your oil is challenging enough."

    • @EverydayLayman
      @EverydayLayman 6 лет назад +3

      I laughed at that too!

    • @mattslaviner1867
      @mattslaviner1867 6 лет назад +1

      Hey some of us work 6 days a week!

    • @Ac18Korael
      @Ac18Korael 5 лет назад +3

      It's only twice a year you have to do it haha or 6000km ( depend of the brand )

    • @RzVids
      @RzVids 5 лет назад +2

      Matt Slaviner really like 5 minutes to dump the oil that’s it.

    • @kiyoponnn
      @kiyoponnn 5 лет назад +1

      @@RzVids Agreed, you'd be a moron not to do it yourself

  • @roymaron7240
    @roymaron7240 8 лет назад +46

    Your videos are absolutely amazing!! the explanation is clear and simple enough that someone that has an interest but no background knowledge can still understand them. Makes me happy to see an engineering channel with nearly a million views, good luck and keep going.

  • @15DurangoRT
    @15DurangoRT 6 лет назад +274

    How much oil could a oil catch can catch if an oil catch can could catch oil?

    • @Malaysian08H
      @Malaysian08H 5 лет назад

      HDscreenerX 🤣

    • @BrotherWitch
      @BrotherWitch 5 лет назад +5

      An oil catch can can catch as much as oil as you can change consistently. Can you keep up with continuously collecting caught castoff collected in an oil catch can?

    • @louisyeo2009
      @louisyeo2009 5 лет назад +1

      Oil catch can could catch oil if the oil could be catch by oil catch can. However if blowby pressure is too high even an oil catch can could not catch the oil, oil leaks into the air intake damaging your intercooler, turbo charger, intake manifold etc..

    • @BuddyRHS1965
      @BuddyRHS1965 5 лет назад +2

      Thats why its good to change $5 pcv valve with every oil change ??? Once a year?

    • @amonmcranny2654
      @amonmcranny2654 4 года назад +3

      I think you meant to say "How much oil can an oil catch can catch if an oil catch can can catch oil"

  • @howardmarburger515
    @howardmarburger515 5 лет назад

    I watched 10 minutes of another guy's 17 minute video on the same subject and you said everything he did in your first 90 seconds. Keep up the great work!

  • @50desoto1
    @50desoto1 8 лет назад +1

    I am so glad you did this video! I asked for this months ago (not the reason you did the video I am sure, but still) and so happy to see it! Wish you covered the importance of filtering the contaminants from GDi vehicles and others where the fuel doesnt spray the valves leading to "maintenance" by the dealer to the tune of pulling intake manifolds and cleaning valves manually.

  • @mosesberkowitz3298
    @mosesberkowitz3298 8 лет назад +56

    Very Good topic and video! Wish you had mentioned a couple cars that have catch cans as an example. My favorite part is your drawing....don't change it to some computer generated diagram....the fact that it's homemade makes it memorable. Good Job !!

  • @MrCROBosanceros
    @MrCROBosanceros 8 лет назад +28

    First time ever,I heard about that.I'm lazy person for anything but,my car and my job.I'm always looking for any tip on prolonging life of my car.I don't care much for performance.Almost any new car has more performance then we need.Thanks for video!

    • @EngineeringExplained
      @EngineeringExplained  8 лет назад +23

      I like your approach to performance haha, and I'd tend to agree. Cars are crazy powerful these days!

    • @SmewthePew
      @SmewthePew 8 лет назад +1

      Than

    • @MrCROBosanceros
      @MrCROBosanceros 8 лет назад +2

      You right,cars these days are heavy.But talking about petrol head?I'm 52 years old fart and the bus driver.When you drive 40 footer bus,full of people,and many,many of those are geezers,you are obsessed with a smooth driving.I just like when any machine works properly and efficiently.,All that rubber burning that you see on TV all the time,to me is plain perversions.What is a purpose of that?

  • @SlotPoint
    @SlotPoint 8 лет назад

    Just bought and installed the E.N.D.Y.N. catch can for my Frankenstein B20V. The benefits are ridiculous, I can absolutely feel the difference; especially since B20 blocks do not have a PCV valve. Awesome explanation btw!

  • @enb3810
    @enb3810 8 лет назад

    Liked because of the honesty at the end. Everyone seems too sensitive these days, worrying about what people will think of their videos. Thanks for the great information.

  • @madfiat8932
    @madfiat8932 8 лет назад +119

    Especially important if you have either Direct Injection or Turbo engines, especially if your engine is both.
    Direct Injection you don't get the cleaning action of fuel on the intake valves, so that oil buildup becomes a serious problem.
    Turbo has higher pressure and thus more blowby under boost than a non-turbo, and thus more oil consumed through the PCV system.
    One caveat also, if you have a turbo engine, you have to make sure the PCV valve itself stays on the correct side of the catch can as you don't want boost going into your catch can!

    • @vdub5818
      @vdub5818 8 лет назад +8

      exactly. The fiance has a optima with their 2.0T GDI. Catch vans are a must for that car same with the 335i BMW's. The intake valves start looking really bad when you pack on some miles, and it doesnt take much carbon buildup at all to kill power

    • @MTreddevil12
      @MTreddevil12 8 лет назад +2

      that's why some people just remove the pcv altogether. Just another area for boost leaks so you either use a catch can to atmosphere or back to the intake pre turbo.

    • @jmarriottc
      @jmarriottc 8 лет назад +2

      Exactly, I have a catch can on my Ecoboost F150

    • @madfiat8932
      @madfiat8932 8 лет назад +3

      Macus Thomas On some cars if you do that however, you will trip engine codes and reduced performance from the ECU. Keeping the EVAP and PCV sensors happy is a big concern on newer cars.

    • @MTreddevil12
      @MTreddevil12 8 лет назад +3

      Hence why I don't own anything new lol

  • @MistahMOB
    @MistahMOB 8 лет назад +5

    Awesome video man been waiting for a good explanation of this thank you

  • @mazenimad
    @mazenimad 8 лет назад +1

    favourite channel for car info, rarely find that much info anywhere. thanks engineering explained

  • @jaimeluis7434
    @jaimeluis7434 8 лет назад +1

    Thank you so much for this video. A few months ago I mentioned you in a comment that a video explaining what an oil catch can is. Thank you, again. Another video that I haven't seen is explaining the differences on a downpipe with catalytic and without it. That would be awesome. Good day to you.

  • @amirHoe
    @amirHoe 8 лет назад +95

    He said one thing i already know...
    people are lazy.

  • @AnthonyJ350
    @AnthonyJ350 6 лет назад +4

    With your background, do you prefer a "closed system" or vent to atmosphere?

    • @JodBronson
      @JodBronson 6 лет назад +3

      I did my Dad's Truck with Vent since I see a lot of Moisture. If you see a lot of Moisture in the Oil Cap, vent it out... This will help your Engine runs smoother... Start better in the Cold / Morning / Rains too :D.

    • @chris2790
      @chris2790 6 лет назад +2

      Vent to atmosphere is bad in terms of emissions.

    • @JodBronson
      @JodBronson 6 лет назад

      +Chris AF - Either way will be bad.... In my case, I have moisture problems.... If we sit the there and keep cranking the Engine, we are actually wasting gas / un-burnt fuel coming out for the tail pipe and that would lead to more pollution :(((((

  • @tomasjones3755
    @tomasjones3755 6 лет назад

    Loved the vid. Good presentation. I found out about separators, years ago, when I added HHO; to my car. Just bought a new vehicle and wanted to see what has changed. I'm very happy, that more people are paying attention.

  • @soberburnouts
    @soberburnouts 6 лет назад

    As you said in this video, that this is another added maintenance task. I own a 2013 mazdaspeed 3 that I bought at 26k miles and I'm at 82k currently, which I daily. I bought it stock and it's now full bolt on with aftermarket intake, turbo inlet pipe, high pressure fuel pump internals, catless downpipe, catless racepipe, aftermarket 3.75 inch ETS top mount intercooler, aftermarket go fast bits respons bpv/bov along with a few other power mods. I'm pretty much full bolt on minus cat back exhaust because I honestly love the sound of my stock exhaust with catless downpipes. I am currently running versatuner for tuning software and have tuned my car entirely myself. I never paid a pro tuner to tune my car and learned how to tune over the last 1.5 years. My car rolls flawless. I take care of the maintenance better than 90% of car owners. When I first got my car, I virtual dynoed it at 261whp 277wtq. Over the course of the 2 years I've been slowly modifying my car and my most recent virtual dyno pull got me 331whp and 349wtq. My cars got 80k and is running pump gas, shell 93 vpower nitro. Compression is great, leakdown is acceptable. I've built this car entirely by myself as my first tuner car and I think I'm doing things right, but I'm still learning every day, and I learn a ton ton ton from your videos. Also, I drive 30k a year.. you said in your video that OCCs are just another added maintenance thing that people are to lazy to install and maintain in short terms. Do you personally think I should be running at least one OCC to the intake to catch blow by? Like do you think it's worth doing? If so I'll grab one, I dont mind the added maintenance. And also, are there other parts that you suggest I should get to help prolong the life of my car that might be a hassle to maintain but offer good benefits?? If so, could you give me some clue or ideas of parts I should get to extend the life and health of my car? I'd like to also mention that when I got the car, it was only pushing 12-14 pounds of boost, and since the mods and all my diy tuning I'm hitting close to 24psi with about 10° of timing and it runs very strong. I just want to extend the life of my car and I'm still learning, so if you have any pointers or could send me in the right direction on some mods I should have the keep my car solid, it would be greatly appreciated, even if they're more to maintain. Thank you very much. If you ever have the chance to give me a call or something could you? and just ask you for some advice and like tips and pointers on things I don't quite understand. Id even be more than willing to offer you money just for an hour of your time! Ty

  • @ForFucksSake57591
    @ForFucksSake57591 6 лет назад +12

    Your thoughts on a Pcv delete? Would make a interesting video! Keep it up!

    • @kiyoponnn
      @kiyoponnn 5 лет назад +5

      What kind of delete? Venting to the
      atmosphere or closing it off? Closing it off could be disastrous for the engine

  • @RLG261
    @RLG261 8 лет назад +8

    I like my installation of catch can. Get about one teaspoon of oil every 700 miles.
    Even have a video showing the system.

  • @rohanmore1774
    @rohanmore1774 8 лет назад

    I have seen most of your videos and i must say you are simply awesome and passionate about engineering. I am pursuing mechanical engineering and aspire to acquire deep knowledge like you :) Hats off bro !!!!!!

  • @jm31772
    @jm31772 6 лет назад

    I always wanted to buy one, but now after watching your video, I'm convinced. Thanks

  • @5jjt
    @5jjt 3 года назад +3

    You can use an oil filter due to one side being threaded, insert an adapter there, then make a hole on the opposite side with another adapter.
    There may be some obvious downsides to this design, but it will work inexpensively.

  • @mykill1221
    @mykill1221 8 лет назад +25

    "Remembering to change their oil is challenge enough" hahaha

  • @QuackLoud
    @QuackLoud 2 года назад

    Thanks for a very thorough explanation. Was watching another RUclips video where she was installing an Oil Catch Can and I had no idea what it was for. Now I know.

  • @scotta9114
    @scotta9114 5 лет назад +1

    Friend had a Mini Cooper with direct injection. Started running badly. Cost over 600 bucks to get the intake valves cleaned. Great video BTW.

  • @RcHDProductions
    @RcHDProductions 8 лет назад +8

    Great video Jason! But I have one question. Does the oil that passes through the pcv valve help lubricating the upper piston walls? Is there a drawback of using a oil catch can in addition to the maintenance?

    • @JoeJoe-pv7gm
      @JoeJoe-pv7gm Год назад

      Without a breather on the catch can the pressure can build up and make things worse

  • @albertpapikyants
    @albertpapikyants 8 лет назад +7

    I was ready an article witch said that the M4 GTS is water injected. Can you make a video on the explaining how that works

    • @EngineeringExplained
      @EngineeringExplained  8 лет назад +5

      Already have! :) ruclips.net/video/T_lECbk4TwU/видео.html (Just ignore the methanol part, works the same way).

  • @bandroid404
    @bandroid404 8 лет назад +2

    Visiting the Volkswagen Autostadt lately, i noticed the extreme positive camber on almost all of the really old cars. The guy in the museum couldn't really explain it to me, so i thought i would aks here. Would be happy to see a video explaining this!

    • @marc0pelot934
      @marc0pelot934 3 года назад

      Here's a quick summary of the consequences of changing your camber. If you want to try it out for yourself, all you have to do is buy Gran Turismo, the best console car simulation that lets you change this setting, so you can feel it at your fingertips!

  • @wythetrumpet6419
    @wythetrumpet6419 5 лет назад

    I always wondered how an oil catch can worked. Many thanks for posting this excellent video!

  •  6 лет назад +6

    My mechanic said the following about Oil Catch Cans:
    "Those are crap. They are for people that have worn-out engines that can't afford to have them rebuilt."

    • @colubrinedeucecreative
      @colubrinedeucecreative 6 лет назад +3

      Blowby is something all engines experience, though as an engine gets older and the rings and chambers get wore out, you get more blowby, thereby increasing the amount of oil you would get being re burned, and therefore making the car smoke more. That doesn't mean that you don't have blowby on a newly rebuilt engine, which leads to excess oil being burned, and caking on the valves and cylinders, increasing the wear on engine, making you have bad blowby earlier on with an engine.
      So yeah if you want to rebuild your engines sooner than a person that takes this precaution, then go ahead.
      Most people don't worry about it too much, except for the people pushing a lot of HP out of their engines, as higher speeds means more blowby which makes way more oil mist. especially those with turbo or supercharger set ups, literally forcing more air into the pistons.

    • @whydoihave6neutrals772
      @whydoihave6neutrals772 4 года назад +1

      Gábriel Priòre he wants you buy a new engine haha what a spaz

  • @ricepony33
    @ricepony33 8 лет назад +16

    I completely understand why you make short videos for consumption, however it would be great if you had either a second video or channel that went more in depth and you could link to that for those of us who wanted more content. Just a thought, great channel.

    • @xXDarkice
      @xXDarkice 8 лет назад +1

      Yeah I agree I'd watch two ads for your content for sure.

    • @EngineeringExplained
      @EngineeringExplained  8 лет назад +4

      What did you want to know about catch cans that you didn't get from the video? Thanks!

    • @ricepony33
      @ricepony33 8 лет назад +10

      +Engineering Explained I was speaking more generally about the tech focused segments.
      On the catch cans maybe discuss the different types, sealed vs atmospheric, baffle design, eBay vs high end etc...

    • @abadmixtape
      @abadmixtape 8 лет назад +3

      Here's my review of an eBay catch can... don't buy it

    • @xXDarkice
      @xXDarkice 8 лет назад

      Engineering Explained I was thinking more of the science behind it.

  • @charliedee9276
    @charliedee9276 6 лет назад

    Made a catch can from the body of a Maglite for my 74 Harley. The stock breather was just a downdraft tube aimed at the ground. A Chore Boy scouring pad makes a great baffle and now I don't have a oil covered bike after a blast down the freeway.

  • @JodBronson
    @JodBronson 6 лет назад

    If you have a lot of Blow-By or a least when you look into your Oil Cap and see a lot of Moisture when Engine is Hot or see a lot of Moisture in the Muffler/Exhaust.... This will help a lot especially Starting issues! I installed this in my Dad's Truck after seeing a lot of Moisture in the Oil Cap / Muffler / Exhaust and Hard Start of Humid / Cold / Rain Morning / Nights. Now the Trucks starts right away and works really smooth too. BTW... I see my Dad always have problems starting in the Morning or when Rain out. I also see a lot of Steam coming out of Oil Cap when the Engine gets Hot! Once I install the Oil Catch Can with a Filter for venting, somehow it solved it, especially Hard Starting in the Morning / Nights!

  • @IllusionInfusion
    @IllusionInfusion 5 лет назад +8

    You know, you forgot to mention how this is far more important on a direct injection engine since you don't have fuel constantly flowing over the intake valve to keep it relatively free of carbon build up like you would with port injection.

  • @wizkid22
    @wizkid22 8 лет назад +49

    Should have talked a bit about Air Oil Separators

  • @428ghost
    @428ghost 8 лет назад +1

    I have one. It's a bit of a hassle in winter though. Condensation builds up due to the colder temperature and freezes inside the can. If you don't drain it enough when the engine has heated up, the frozen water can block the hoses and allow the blow by gases to build up in the crankcase anyway.

  • @33Skygazer
    @33Skygazer 8 лет назад +1

    GREAT video!! I've wondered what their purpose was, and I've heard of people using them on GDI engines, which is what my next vehicle will likely have.

  • @devinsmith4151
    @devinsmith4151 8 лет назад +6

    Not needed anymore in some modern engines. The crankcase breather system is built-in the valve cover and has an oil separator.

  • @skun80
    @skun80 8 лет назад +6

    Now for turbocharged engines please!!!!!! :)
    On turbocharged engines the PCV becomes little more complex due to vacum to positive pressure at intake manifold. Install an Oil Catch Tank on a turbocharged engine is the tipical theme with tones of pages on internet but even that major part of people install this in the wrong way.
    Please explain to the world how to do this the right way

  • @WorkPlayDrive
    @WorkPlayDrive 7 лет назад

    Excellent video as always, I get asked all the time about Catch Cans now I have a trusted resource to send them to for a clear quick explanation.

  • @robertnoble3733
    @robertnoble3733 5 лет назад

    Love your videos! Comments on this video: you should have pointed out that (a) older fuel injection systems sprayed fuel into the intake stream ahead of the intake valves, cleaning them with a continuous spray of gasoline, (b) the problem is worse on higher compression engines, eg turbocharged engines, and (c) the dealers want between $600 and $900 to remove all your intake "stuff" and blast your intake valves with walnut shells. If the catch can halves the frequency of valve cleaning operations, even the Black Forest catch can ($300+) will pay for itself quickly.

  • @TheFJG23
    @TheFJG23 7 лет назад +4

    How often do you have to drain the oil?

    • @supervitz7178
      @supervitz7178 6 лет назад +1

      TheFJG23 probably at least during each oil change?

    • @a.wheeler7731
      @a.wheeler7731 6 лет назад

      Depends on how you drive and how good your can is, but once a month or more often for me. I do mine every 2-3 weeks. I got about 14 oz of oil caught in 5k miles.

    • @rixiv7868
      @rixiv7868 6 лет назад +1

      A. Wheeler God damn that much?

  • @blaqwhole4998
    @blaqwhole4998 5 лет назад +5

    20 years ago we just called it "crank case ventilation" and everyone knew what it was.

  • @russhellmy
    @russhellmy 5 лет назад +2

    I enjoy your videos and appreciate the time and effort you put into research and data , not just BS & hyperbole like many auto commentators.
    As such I would love to see your opinion on "Bypass Oil Filters" especially with regard to larger Diesel Vehicles such as SUVs and 4x4s.
    I have a 2015 Ford Ranger 3.2L Wildtrak with 100k miles of which 80-90% are from a 50miles each way daily motorway commute. I use the recommended 5W30 Fully Synthetic Oil and do the 7.5k mile oil changes myself. I am considering adding a Bypass Oil Filter system to improve oil quality and possibly extend the oil change interval to 15k km since most of my driving is straightline 60-80m/hr motorway driving which doesn't put a lot of stress on the engine or lubricant.
    I believe diesel engines due to the higher pressures and dirtier fuel will generally have more carbon and sulfur compounds enter the Oil. There are plenty of videos and lovely graphics by the "Bypass Oil Filter" sellers. But almost a complete lack of independent unbiased assessment of their effectiveness.
    I often see these Oil Bypass Filter systems used in Heavy excavation equipment for both their diesel engine oil as well as their hydraulic oil systems and also in stationary hydraulic systems and believe they are also used widely in Semi truck industry, but again there doesn't seem to be much published independent assessment of these systems
    I expect with your fleet contacts and industry experience you would be able to give a valuable opinion on these Bypass Oil FIlter Systems.
    Thanks

  • @msharpashotr
    @msharpashotr 8 лет назад +2

    Great video, used to have oil drip out of my SRT4's intake and throttle body before installing a catch can!

  • @MrManuel1329
    @MrManuel1329 8 лет назад +14

    Cant you just route the oil in the catch can, back to the oil pan of the engine? So that people don't have to worry about changing the oil in the can or would that contaminate the oil to much?

    • @JerryTheHeretic
      @JerryTheHeretic 8 лет назад +8

      Yes..contaminated.

    • @KlueBat
      @KlueBat 8 лет назад +16

      The stuff that gets caught in the catch can is really nasty. You don't want that back in your crank case if you can avoid it.

    • @DAVe3283
      @DAVe3283 8 лет назад +3

      KlueBat The LB7 Duramax had that setup from the factory, and 10,000 mile oil change intervals. Mine has 312,000 miles on it, and there are many with much higher than that. All that stuff is already in your crank case, that's where the PCV is coming from. The lighter stuff (water, fuel) cokes off and goes out with the air. It doesn't hurt to keep it separate, but I don't think it really helps much either.

    • @computiNATEor
      @computiNATEor 8 лет назад +3

      Yes, you can, as long as the oil changes are completed on time. BMWs with the M54 inline-6 use a "CCV" system (crankcase ventilation system) that does just that. Problem is, the CCV system in those engines is all plastic, and will eventually crack; especially in cold climates, where the oil vapors/residue/water can freeze overnight. In bad cases, CCV failure has caused hydrolocked engines, when the engine has sucked oil directly into the combustion chambers from the oil pan.

    • @TheEdudo
      @TheEdudo 8 лет назад +2

      i have a 300 TDi land rover engine it has a cyclonic oil separator or catch can, it has one inlet and two outlets, one goes directly to the intake hose, the other that is at the bottom of the can, after a funnel type form, goes directly to the crank case dumping the oil separated, but anyways i get a couple of spoons of oil into the intake.

  • @TautologyTechSystems
    @TautologyTechSystems 7 лет назад +3

    Hey I know you can help me. Just bought a 2017 wrx sti and I'm considering an AOS or catch can. I do not plan on ever doing any other mods, and this is strictly my daily driver that I like to have some occasional fun in. Do you think this is a necessary thing to do? I'm really just concerned with ringland failure and I've been reading that this would be an excellent investment.

    • @jtpro0244
      @jtpro0244 7 лет назад

      It's probably not necessary. It definitely won't hurt your car, and a can will help prevent the dirtying of the top of the pistons and valves. And, the fact your car is turbo charged means there is more positive crank pressure, especially as blowby increases with age/wear. I'd say if you want to do a project and don't mind the maintenance, go for it!

    • @MD-pz3cn
      @MD-pz3cn 6 лет назад +3

      EJ motors use port injection which takes care of the intake valve issue. However, catch cans/AOS are still a good idea on EJs.
      Since these mods reduce the amount of oil going back into the intake tract, less oil = less chance of knock. This is because the oil isn't diluting the air fuel mixture during the intake stroke which would in turn lower the knock resistance of said mixture and cause pre-detonation during the compression stroke. As long as EJ motor cars are driven correctly...letting the oil get up to operating temp before pushing the car hard, ensuring oil levels are always correct, using the correct oil (NO Mobil1), and not requesting high load from the motor in the lower rev range, a lot of bearing and ringland issues will be gone.

    • @MrAquinas1
      @MrAquinas1 6 лет назад

      What's wrong with Mobil 1?

    • @MD-pz3cn
      @MD-pz3cn 6 лет назад +2

      In short, it shears down over time to a weight closer to that of a 20w at operating temp. This shear is designed to occur on purpose in order to lower friction between engine internals and increase, or at least maintain fuel mileage. This then in turn brands the oil as a "resource conserving" oil and hold the ILSAC GF-5 certification. All find and dandy, but EJs are driven hard by their owners at (inappropriate) times. A "thin" oil won't protect crankshaft and/or connecting rod bearings during high load inside the cylinder and that's when you'll see rod knock as a result of the crank and/or con rod bearing getting spun because the thin oil gets pressed out of that area and cannot provide sufficient protection.
      This is what my research of oil+turbo Subaru motors has led me to believe. I would like to be corrected if I am wrong.

    • @MrAquinas1
      @MrAquinas1 6 лет назад +1

      Thanks. What do you recommend? Royal Purple? Red Line? Castro? Valvoline? As a road racing fan, I've actually seen professional teams using the first two in Le Mans type race cars at Lime Rock. But racing use can be different. They are less concerned with detergents since they frequently tear down their engines.

  • @Enlowra
    @Enlowra 4 года назад +2

    I have a turbo charged 1.6L GDI in my 2014 kia forte, I've been using CRC and the seafoam intake cleaners to keep up with the carbon build up. I was always curious how much material gets recirculated and caught in the catch can, so I got a cheap amazon special to test out. I found the PCV in the kia book, made that the input of the catch can, and the outlet of the can finished at the intake manifold. I drove 80 miles and checked it the first time, there was enough fluid to fill a whiskey shot glass halfway full. I put a ball of fine steel wool in the empty can to help catch particles. I think I'm a little late putting a can on the car since it just hit 100k miles lol. It works well enough that im going to start looking at catch cans for my other vehicles.

  • @gonzccs
    @gonzccs 8 лет назад

    It also helps to obtain a cleaner combustion and so extends the life of the catalytic converter, O2 sensors on the exhaust system and less pollution... it is a great Idea! Thanks for this and all your great work!

  • @HATECELL
    @HATECELL 7 лет назад +8

    Is there a specific reason why the air (and oil mist) does get re-routed from the PCV-Valve into the intake instead of just releasing that stuff into the environment?

    • @EngineeringExplained
      @EngineeringExplained  7 лет назад +86

      +HATECELL so that you're not releasing it into the environment.

    • @danielwoods404
      @danielwoods404 7 лет назад +1

      +Jon Rosenburg HAH!

    • @markg7030
      @markg7030 7 лет назад +6

      PCV started in the 1960's. Cars used to vent crankcase vapors to atmosphere.

    • @tracylewis3926
      @tracylewis3926 7 лет назад +25

      The PCV system does far more than just address pollution. It performs several critical functions to keep your engine alive and long lasting. And that requires an evacuation suction source to remove the damaging compounds always entering as "blow-by" before it has a chance to settle and mix with the engine oil, as once mixed, it is there to stay. These compounds are as follows:
      Water, unburnt raw fuel, sulfuric acid, and abrasive particulate matter. Today's full synthetic engine oils will last 10's of thousands of miles if no contaminates are ingested, so that is where the PCV system comes in. All have a Fresh/Clean side where filtered fresh MAF metered air enters one portion of the crankcase, and flushes and replaces the Foul/Dirty vapors that are evacuated (sucked out) the opposite bank or portion. If you just vent to the air, your taking technology back to the pre-1960's when all engines "vented" using road draft tubes, and even changing oil every 1200-1500 miles (the standard back then) engine wore out and needed a total rebuild by 40-50k miles. It was after the Feds mandated the PCV system to reduce ground water pollution caused by oil run off from the roads that these same engines, using same oils and change intervals now were lasting 100-150k miles. And unexpected result of the PCV system as it was discovered these damaging contaminates were now being removed before they could settle into the engine oil. Another issue is pressure in the crankcase. If you do not use a strong suction source to evacuate these damaging suspended contaminates, then pressure builds to the point of being able to vent, and only a small amount of these actually exit the engine before they settle and mix. ANd simple flow dynamics dictates pressure will always be higher behind any vent in order to vent. This causes another issue, and that is piston ring flutter. Piston rings are designed to see pressure above, and suction below them to seal properly and maintain stability. When you remove the suction to the crankcase the intake manifold provides, then the pressure allowed to be present below the pistons causes increased blow-by and wear over time to the rings edges as well as the cylinder walls from the "ring flutter". You also then have parasitic power loss if the pistons have to fight the pressure in the crankcase on each down stroke.
      Lot's more to explain, but that should cover most of the question w/out writing a novel.
      Also, all "catchcans" are not created equal. The simple empty cans with fittings welded on allow most of these contaminates to pass right through trapping only some oil still causing the issues your attempting to prevent. Most cans, even the biggest brand names only trap 15-30% of the total "gunk" you want to prevent from ingestion. Look at one that is 95% plus effective like Elite Engineering's E2-X line, or the original RX (not the cheap copies pretending to be RX, or the latest from Tracy Lewis Performance through Jegs or direct from them www.TracyLewisPerformance.com
      Hope this helps!

    • @theq4602
      @theq4602 7 лет назад

      Old school 2 stroke diesels used to just let it drip onto the ground. Often time on a cold morning youd find a big puddle of oil underneath your truck. If you didn't the advice was to top off her oil. Lets just say the EPA hates these engines.

  • @prayerpowersr854
    @prayerpowersr854 8 лет назад +4

    make some videos aboot motorcycles

  • @ccfckieran1440
    @ccfckieran1440 11 месяцев назад

    Gotta say love how u draw diagram and stuff so easy to understand great video 💯

  • @intestinalworm1202
    @intestinalworm1202 6 лет назад

    Well done - remember as a kid when my dad had to remove and clean a gummed-up and jammed PCV valve in our family car.

  • @MostGenericUser
    @MostGenericUser 8 лет назад +11

    4:20 video length... the only oil that catch can be catching is cannabis oil

  • @HAL-dm1eh
    @HAL-dm1eh 8 лет назад +163

    Catch Cans are used by Camaro owners to catch the butthurt from losing to a Mustang 5.0L.

    • @XjDrZ
      @XjDrZ 8 лет назад +83

      All while the mustangs are running over the spectators!

    • @Mondos2001
      @Mondos2001 8 лет назад +2

      +RedBeard109 👏true

    • @Mondos2001
      @Mondos2001 8 лет назад +1

      Louie Watson si señor, but the new corvette, that a different story.

    • @petermoger8135
      @petermoger8135 8 лет назад +20

      +RedBeard109 at least that 5.0 can create enough torque to drag the crowds with it. I don't see any Camaros taking out 20 people without loosing any speed.

    • @Jman42093
      @Jman42093 7 лет назад +1

      Devin Actually stock for stock the mustang is faster for all years except the 2016 and up camaros and they are quite impressive.

  • @robertnoble3733
    @robertnoble3733 8 лет назад +1

    Great video! Now you need to do the follow-on video that tells why modern GDI engines really need a good catch can, whereas your older carbureted or conventional fuel-injected engine did not. (ie, automakers did not properly evaluate the long-term effects of GDI on intake deposits). Dealers want anywhere from $500 to $800 to clean your intake ports and valves. Some automakers are discussing adding an additional fuel injector within the intake manifold just to keep the intake clean. That's a nice idea for the future, but it doesn't help those with existing GDI vehicles.

  • @duranbailiff5337
    @duranbailiff5337 Год назад

    When cleaning the throttle body on my wife's 2004 Buick LeSabre, I found it difficult to clean both sides, so I removed it from the intake. The front side looked pretty good and had probably been cleaned in the past (used car). The intake manifold side was incredibly coked up. There was in excess of 3/8" buildup- and I had never seen any engine that dirty before. I plan on putting a catch can someday to prevent this from happening again.

  • @FroZe2223
    @FroZe2223 8 лет назад +3

    Second

  • @jaredmac11
    @jaredmac11 6 лет назад +2

    I cant tell you enough how much I appreciate your videos. Im a bit green with all these components, its good to know what you're replacing when a part is failing and what its function is. Even further, I noticed my PCV goes right back to the throttle so I am going to build an oil catch can : )

  • @diabolus8983
    @diabolus8983 8 лет назад

    Haha, what a timing.. bout an hour ago I mostly finished my engine rebuild/swap and I was thinking what to do to keep pistons and valves nice and sparkling for longer. My solutions were around fuel additives but this is definitely better.

  • @jetrider7558
    @jetrider7558 4 года назад

    Outstanding explanation. That's why I follow you.

  • @skitzvitz
    @skitzvitz 8 лет назад +1

    Great video :), explanation is spot on and easy to understand. You are very right about people being lazy and adhering to regular service intervals. However if a driver starts to mess with any components e.g. performance mods a catch can is a must esp on forced induction engines.

  • @homeroaguilar6163
    @homeroaguilar6163 3 года назад

    You are the best brother I watched a bunch of videos and nobody explain the inside of this thing thank you for the whole information

  • @bonezfromga
    @bonezfromga 6 лет назад

    I'll say again, Jason, I love all your clips!

  • @Mickcotton
    @Mickcotton Год назад

    Thank You So Much. I just installed a Catch Can in my 2006 Pontiac GTO. 👍✅ Today. Cheers 🥂

  • @lasthope703
    @lasthope703 3 года назад

    Thank you for exampling into detail. Thumbs up

  • @charms1944
    @charms1944 8 лет назад

    Can't believe you're almost to a million subscribers!! Been watching you since before your integra got salvaged

  • @charliedee9276
    @charliedee9276 7 лет назад

    Good video as usual. Funny to me how these are becoming popular now. I have been using these for years on my old Harleys and every car I have owned.

  • @Rhosticks
    @Rhosticks 8 лет назад

    One of the best teachers ever!!

  • @KonkrRoads
    @KonkrRoads 5 лет назад +1

    Straight forward and well explained. Thanks!

  • @pedronavaja223s
    @pedronavaja223s 8 лет назад

    I've learned a lot on this channel! Thanks man!

  • @goldivo1
    @goldivo1 8 лет назад

    I would love to see you do a video on turbo blankets and the thermodynamics behind it, there are a lot of theories I would love for you to explain.

  • @rainbowsandunicorns5762
    @rainbowsandunicorns5762 3 года назад

    I like this man I shall watch this mans career with great intrest

  • @mydigitallife8311
    @mydigitallife8311 6 лет назад

    YES you DO have a film about oil catch can...

  • @BostonJoe620
    @BostonJoe620 4 года назад

    Great video. I was wondering why they don't include these from the factory and now I do!!

  • @SnitchyCat
    @SnitchyCat 4 дня назад

    Thank you sir, for this video. It has enlightened me enormously.

  • @mattbrennan8088
    @mattbrennan8088 6 лет назад

    thanks, great video. You explain things so well and practical!

  • @tharakakularathne319
    @tharakakularathne319 3 года назад

    simple and good explanation

  • @MrSunSetts
    @MrSunSetts 5 лет назад

    Just did it to my kia soul 1.6 gdi 2017.
    A few things i want to note from my experience.
    Number 1. I could not vent to atmosphere, i tried initially and was greeted by irregular idle, high that normal idle,jerkiness while driving, and the car ran hotter. Put a cap on top where the vent was and boom. Smooth idle everything soubded and felt stock. Has been for the past week. I dont know the science, but im sure venting to atmosphere was messing with the precise/delicate vacuum that my gdi engine creates.
    If anyone has more infor as to why my car was doing that with the vent ide love to hear it. No codes or lights came on (probably cause i changed it as soon as i noticed the car was not running well) but im glad i did it :).

  • @stevewaclo167
    @stevewaclo167 5 лет назад

    My 1987 Alfa Spider with a Bosch L-Jetronic fuel delivery system uses an oil mist separator that acts as a catch can with one difference: condensed oil most is captured at the bottom of device has a tube that leads to a connector at the bottom of the dip stick tube and returns the oil (and whatever else 😟) back to the crankcase. I'm not particularly lazy and have considered disconnecting that return line and "catching" that material for proper disposal.

  • @russellhooker1284
    @russellhooker1284 4 года назад

    great explanation

  • @MikeyFraz1
    @MikeyFraz1 5 лет назад

    This was really helpful. Thank you!

  • @GordorBR
    @GordorBR 8 лет назад

    fast and clean video! Well done

  • @VKSgtSLaughter
    @VKSgtSLaughter 4 года назад +1

    Great explanation! Thanks brother!

  • @jameswilliams663
    @jameswilliams663 6 лет назад

    nice, appealing tempo on your speech delivery - a pleasure

  • @Josh-zy3lq
    @Josh-zy3lq 4 года назад

    This is a great video, thanks I’ve Been contemplating getting one

  • @MrRIPZ1
    @MrRIPZ1 3 года назад

    Ty for the explanation

  • @matthewbeck7282
    @matthewbeck7282 5 лет назад +1

    Very Informative and Thank You makes perfect sense.

  • @michaeljohnmcilrath7826
    @michaeljohnmcilrath7826 8 лет назад

    Great video. Concise clear explanation. Thanks

  • @spirulerlcous
    @spirulerlcous 8 лет назад

    Great tutorial! Thanks!

  • @jatinshetty
    @jatinshetty 5 лет назад +1

    more such videos!! great job mate

  • @CarsnStuff
    @CarsnStuff 8 лет назад +1

    One of the things i've done with my supra is vent it into open atmosphere. after my oil catch can. The thing about supra's is they are known for blow by so one of the first things we have to do when modifying our cars is opening up the holes and ports for the vents on the valve covers. If you don't you actually run the risk of blowing front and rear main oil seals. I've seen it happen and had it happen to me. Soon as i opened up my ports from about a -6 to a -10 an fitting i don't have the problem any more.
    I have a cheap oil catch can, so it has no baffles or filters inside it. So it catches the oil and air mixture and vents out the rest outside. They are good things to have considering it keeps oil vapor from entering your combustion chamber and causing build up.

  • @adriancortez2000
    @adriancortez2000 8 лет назад

    Didnt know it was rerouted to intake. Awesome video👍🏼

  • @flybobbie1449
    @flybobbie1449 8 лет назад +1

    Light aircraft aero engines don't even route the vapours back into the engine, they are dumped over board.Amazing what gunk and moisture drips out after landing.

  • @boosteez619
    @boosteez619 Год назад

    Best explanation by far

  • @mishnasamettarsoo8138
    @mishnasamettarsoo8138 7 лет назад +1

    Hiii... thank you very very much.
    nice to meet you.

  • @liketolooker
    @liketolooker 3 года назад

    Thank you, that was the exact explanation I was looking for 👍