Stp Pro Series Intake Valve Cleaner works!
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- Опубликовано: 6 фев 2025
- Does stp pro series intake valve cleaner work?
We show 2 different tests, 1 test before and after intake valves on a direct injection engine. The valves used for this review have the worst carbon buildup inside the engine. These carbon deposits have the most buildup I have ever seen. So this will need to be the best intake valve cleaner made in order to clean the valves. The second test we take the variables of the car out of the equation and use new valves with oil vapor that was saved in a oil catch can. Next we pour that oil vapor over the valves and use a torch to bake it on really good.
For more information on STP pro-series intake valve cleaner or where to find it click the link below.
amzn.to/3jeToO7
How to use stp pro series intake valve cleaner?
We show the use but Always follow manufacturer's instructions.
Today on Nates interactive auto we find out just what is best for intake valve cleaning.
In previous videos we tried Liqui moly valve clean and crc intake valve and turbo cleaner vs seafoam spray. 
Авто/Мото
I really appreciate all of your kindness & time it means the world to me in these trying times. I tried to speed it up so you don't waste valuable time.
Can you test a Purolator boss filter
I did that in a recent video
@@NATESINTERACTIVEAUTO do you remember how long ago was it? I'm looking for it now
You did the stp video !!! I like that you read the comments man. We appreciate you
Trying times?
For those who are interested, this is from the MSDS:
Butyl cellosolve 25-40%
Xylene 25-40%
Ethyl benzene 1-10%
Polyether amine 1-10%
Alkenyl amine
Genius thankful
Nice, the cellosolve is what the old gm top engine cleaner was, Best stuff. I can smell the xylene when using it too. I've been using it at my shop a bit lately om these gdis. Its just too cheap, easy, and effective.
@@jeremyr7147 just curious if you've serviced 2.0 T VW engined for valves mainly with this?
@@RipPhillips no, but it will work equally. I just finished a chevy impala 3.6 DI.. the stuff works. I have been getting them in about 150k mi. W/ no records of cleaning.
I like this because the engine is running while dispensing. It wont blow off big chunks like doing a soak. If its bad i would do 1 of these before the oil change 2 or 3 times, then move to a full GDI soak if you want. The soak will drop bigger chunks. So I'm doing these stp cans most the time till someone gets caught up.
Last time i did a crc GDI soak on a really sludged 150mi hyundia i got worried and stopped at 1/4 bottle and chunks were already pinging at that point. Like marbles in a can.
The key to a safe application is getting the engine and catalytic converter mostly as hot as possible. Set everything up so your ready to hook up after a hard drive to get the converter hot. That way chunks will vaporize when they hit it..
When finished drive moderate the first couple min then get into it a few times. For about 15 min of driving then change the oil afterward.
@@jeremyr7147 Hey man appreciate the feedback and detail. New to this platform but want to take care of it so anything helps. I assume drive slow and then harder to reheat and help burn out carbon broken loose before high rpms disloding cold chunks in there then? Thay all makes sense tho.
Apologies I forgot to show the drive at highway speeds for 10-15 minutes
it's cool Nate. Thanks.
I was just thinking to myself a few days ago, "It's been awhile since I've seen Nate stick his hands where they're not supposed to be while warning us not to stick our hands there." 😄
I love it great way to show dangers that I don't recommend.
Xylene is good stuff. Also, PEA or polyetheramine is one of the ingredient to look for. It breaks carbon down by dissolving instead of breaking off larger pieces. Larger pieces would be destroyed in combustion and sent out the exhaust valve. The most common issue I’ve seen in the field is melted cats or contaminated upstream oxygen sensor.
- MAKE SURE THE ENGINE IS AT OPERATING TEMP BEFORE USE. Also not recommended on vehicles with worn spark plugs (over 80-100k mi) - Can cause pre-ignition and/or detonation.
- For non-GDI engines, in preparation for intake cleaner, run a bottle of STP ULTRA 5-in-1 (25-50% PEA) or Redline Si-1 (28-34%) in fuel tank (Follow instructions on bottle!)
- Fill fuel tank and perform induction cleaning
- change oil
Colin...What source did you see the STP = 25-50% PEA? and Redline 28-34% ?
Care to share the brand you’ve seen that’s got a good amount of PEA?
That looks like it works better than most I’ve seen you and others use. Nice video, Nate.
I was really surprised at the results, a subscriber told me to try it that its the best so I gave it a try. I want to let you know all of the kindness means more than you can ever know to me.
No way. Nate, is it really that good cleaning valves? That looks a lot better than anything else you tried.
It helps that I clean them periodically not to allow it to much time to be baked on. Otherwise it may take me more than 1 treatment. Thanks again for your time.
A subscriber told me it was the best in a comment so I told him let give it a try.
These products must do something, otherwise some car companies wouldn't use them like Subaru (Upper Engine Cleaner). Better results than I would expect. Impressive!
This stuff is fantastic for the 2.3 l EcoBoost mustang!! Highly recommended if your car is over 50,000 miles! I used to have misfires every couple of weeks. But when I added this engine cleaner into the mix all those misfires disappear and the car's engine is much more responsive! Again, highly recommended
im having this exact issue with mine
@@Savageslash1234 Make sure your spark plugs are gapped correctly as well.
This is amazing! My girlfriend's GTI is in need of a walnut treatment - this might just save us from having to take the whole car apart!
What he isn't telling you is all that carbon that he's cleaning goes into your exhaust, through your turbo and could plug your cat if you have enough carbon.
@@RepairGeek it could also score the cylinders if the carbon is hard enough. I wouldn't do this with any engine that has alusil cylinder sleeves.
I just sold my GTi after having it few years. Carbon buildup on these engines is ridiculous. Do yourself a favour mate and fit a catch can.
Impressive results on the STP treatment! I would probably say the best results so far!
Scotty Kilmer recommends ATS fuel cleaner. 🤷♂️🤷♂️
It’s really expensive it’s $40 a can.
@@adanlopez1011 it is!!
@@Unplugged704 Scotty kilmer is a walking heart attack
I already did this treatment to my car before seeing this video. And YES it made a very noticeable difference on my GDI Turbo engine with only 10k on odometer. So easy just follow the instructions correctly. Hard to screw process up.
I'd be careful on turbocharged cars.
@@Too-Gq-For-You Yes considering what goes into the cyl and doesnt get burnt goes back out the exhaust and then drives the turbo it would be risky.
Nate, congrats. Your channel's really growing. I'm glad YOU haven't changed, though. Keep pointing those fingers at the engine....love it! Great video!
I don't have a GDI engine, but I run a bottle of GUMOUT for GDI engines in the fuel tank after ever oil change. I may put an oil catch can on the engine anyway just to reduce the oil vapors going into the intake manifold. I had a carburetor on a generator get jammed up from the vapors routed into the air intake from the crank case, so I re router the vent through the front of the air cleaner so it passes through the pleated air filter, solved that issue.
Everyone with an EGR valve should do this
Just block the EGR, problem solved...
I just bought this from oreilly for$40 …
My 2010 Nissan Titan is like brand new ! Ty
How many miles on car when you used STP?
How’s the Nissan running now ., and how many times you had to clean the valves
@@Voltrondefenderoftheuniverse I’ve only down it once. At 100k miles. The truck is getting older . Used cars are selling for a profit now. I had an offer for $20,000. Brand new is was $30,000. Had $10,000 of free options. New trucks are $60,000+ and too many flan electronics if you ask me
@@ReefMimic ➡️ thanks for the reply 👍🏻
Okay I'm confused. How did you scope those intake valves? Were you able to get the scope in the side of the intake all the way down those 12-in intake runners into the head?
😂😂😂
It works, as demonstrated, the part that STP doesn’t tell you is that ‘chunks’ will break up and get into your combustion chamber and some will lodge between the Piston rings and cause ‘Oil burn’ issues. Also, change the Oil a day later and you will see a lot of broken off carbon bits in the bottom of your Oil Pan! So yes, it works but…
So changing the oil will resolve this issue? I’m thinking about doing the this intake cleaner
@@Cummata it will remove the chunks but in my case pieces were/are wedged between the piston rings and cylinder walls and it’s been consuming oil ever since… 7 Oil changes later🤦♀️
@@HsquaredH2 so basically it’s not worth it to do the cleaning?
@@Cummata I think its high risk due to the potential of Oil burn issues. I personally will do the Walnut shelling next time…
@@HsquaredH2 how many miles was on the card when you did the service?
I currently have about 105k so I know there’s a bunch of build up which may cause a problem when it starts chunking off 🤔
Impressive. Best ive seen on the tube thus far!
1 where does it all goes? Into cats?
2 valves are steel I got it, but how about valve seats, intake and exhaust ports(aluminum ones) and moreover gaskets?
3 how this is better than kerosene and transmission oil?
Stp needs to pay this man, I bet sales went up after this video. Stp pay the man!
I've been using the CRC Intake & Turbo cleaner, but my local auto parts store is out. I'm buying this tomorrow.
Hi ., did the stp work ?
@@Voltrondefenderoftheuniverse I think it did, but I suspect my car might be better off with a professional cleaning with the walnut shells. I changed jobs and only drive around town now, rarely going above 45mph so it seems to clog up quickly. 90% of my driving is to the grocery store (1/2 mile) or to work (2.5 miles), so the car doesn't even warm up most of the time.
The instructions say to insert the tube into the hose for the intake manifold at the butterfly valve and reconnect the hose, but my hose end has a metal insert and crushed the end of the tube. Traded it in for a second bottle and left the hose off slightly and it worked. I think I'm going to do this again this weekend, but this time insert the tube just before the turbo incase that's the cause of my hesitation.
@@jeffrielley920 ➡️ thank you for the reply 👍🏻
Used the Pro Stp intake valve cleaner on my gdi engine yesterday. Feels like I added 10 horsepower!
Jel' to zbilja funkcionira?
@@markosedlarik9553
Da
How many miles/km did you have when you cleaned it? What car/engine?
What car was it on ?
That was impressive from the STP. Great video Nate.
Do this with complete fuel system cleaner and motor flush. Put that fuel additive few days before and drive with sportmode in highways. Change motor oli after this cleaning process with motor flush. Use that fuel system cleaner half way of oil change and before. That keeps engine cleaner and carbon builds up only in the intake manifold. No need motor flush anymore but intake need to clean and it's better to do same time when change oils. Get the carbon out from engine. If you only clean carbon it's going in motor oil... and back to the intake.
Fantastic video. I'm planning on buying new car with 2.7 turbo with DFI and want to have a preventative treatment plan and this looks fantastic... Probably do it every 10 to 15k miles.
It would have been interesting seeing how you entered the camera through the intake manifolds.
I agree. Very curious how he gets in there
He removed the spark plugs and snaked the bore scope into the cylinder that way.
I am wondering the same thing because I watched another video that showed the same exact images.
@@reruddock
Unless you’re a magician, this is almost impossible!
Images are from the back of the valves and not from combustion chambers.
Probably just pulled off the manifold...
Great video!! Ill try this while im at 20 thousand miles before they get too gunked up for some preventative maintence ! :) thanks man!!
Hmm having seen a lot of these cleaning videos, I find it hard to believe it did such a thorough job cleaning the valves.
It's literally 8, 10mm bolts to remove the whole intake plenum, Kia's are great to work on and there's no way he snaked that endoscope through the intake manifold, he took it off. You would spend more time trying to to get it to bend in the impossible angle you need versus the 3 minutes it would take to take off the manifold
It's got to be true I seen it on the internet
I agree. It's very difficult for me to believe that a single application of this stuff cleaned the intake valves/ports so well. I just don't believe it.
Really nice. Would like to see liqui moly pro line throttle body cleaner as they say it's cleaning the valves as well.
Good test, however for valves there is no high heat & vacuum wash to properly cleanse surface! Tks
This video has peaked some interest . I'm glad I have my catch can too brother
Out of all the valve cleaning products that you’ve tested what would be the number 1 product that you would recommend to all your viewers? For the best results.
If this car had a Catch Can, why valves so dirty? Was the Can a recent addition? Trying to figure out if the catch can worked to keep valves clean or not?
With that much carbon being removed at once did the car later have issues will the catalytic converter being blocked? I would imagine it wasn't all burned during combustion and some of it made it out the exhaust.
Cat will definitely take a huge loss of efficiency if it is not disconnected prior to treatment
@@thatoneguy2756 carbon released at 300 Celsius and the cat is about 1200 celsius. so wouldn't worry about the cat
@@lareboy687 Good point mate. I've seen many people talking about how the carbon could clog up the cat, but I've never heard of anyone who actually ended up with a blocked or underperforming cat after using a product like this.
Have you had any issues? I ran this on my 14 GTI and 08 Jetta. Never had any issues with both, it made the Jetta feel brand new. I even got new sparks and plug and that made a huge difference.
GM I need my morning car info expert , Nate have a great day
Does this process affect your MAP sensor down steam of the throttle body
When you consider with direct injection fuel does not go over the valves, it should be no surprise that in some cars they look horrible! I just hope that if I ever get a direct injected car it also has secondary injection which would clean the valves. I find that really hard to believe that they would ever allow this to happen with cars. They are always worried about fuel efficiency and emissions. I guess they don't realize the problem direct injection can cause with that when the valves are dirty.
After the car has been sold who cares. After all they test fuel efficiency and emissions when the car is new not 50k
how are u getting into the valves to take photos? did u remove the manifold?
Is that real? By far the best example of carbon removal I’ve seen other than walnut blasting. Impressive
I am extremely impressed
He is selling the product in the description so might be worth bearing that in mind.
Need to know where to connect it on a 2017 VW Jets 1.4 to avoid any unintentional harm?
Now how does this compare to CRC or berryman 2611 and do you recommend you change your oil after this treatment?
Run an oil catch can, and it will keep your intake valves clean on a direct injection motor. In fact, some oem’s are starting to incorporate them…
It helps but doesn't stop it all. Just slows the process
Cheap OCC catch 15-10% ..good ones catch 90-95%
How often do you so this Nate? How long in between treatments?? Your valves get really dirty. I see you have a catch can, why do your valves still get very dirty???
Also while doing this on a car that has a inverted manifold like this one you want to every now and then race the engine as to make sure the cleaner isnt puddling in the manifold.
So does this just unplug one part and send it downstream to plug up something else in the exhaust
exhaust is easy to replace if you have the tools and much cheaper than the top of your engine needing a rebuild
I have been using STP products long before injection or GDI and all ways had good results. But keep testing. What about a presoak like over night or 24 hrs
Damn good video 👍 I just bought a new truck maybe I should use ever other oil change as a maintenance item
I've been very underwhelmed with the performance of valve cleaners I've seen, until this one. It appears to do what it says. I have a Kia 3.3L GDI with 85K miles, and have been looking for a way to do a decarboning treatment that works without tearing down the engine and media blasting or scraping. This looks like the answer. Thank you. I just ordered a can of it along with some other things for a routine service.
There’s gonna be a ton of carbon buildup on those valves. With that much mileage it’s gonna smoke pretty badly. But should run significantly smoother . I would suggest doing that right before your next oil change. And also do an engine flush too just to ensure it removes any carbon pieces that may have gone into crankcase.
How did it work??
How was your experience with STP valve cleaner ? Did it work?
@@AZRockRunner Best one I've found. I have a 2015 Kia Sorento with the GDI 3.3L V6, and use the STP product to clean the injectors/valves since GDI engines tend to build up carbon. Doing great at 100K miles.
@@GlassWolfLHno issues so far? Burning oil?
Почисти клапана и откапиталь мотор. Чел 5+. Побольше бы таких реклам
Wonder if you ran it back to back like instead of one can do one can drive it n then repeat it a few times like two or 3 cans ...wonder if it would get em even more clean???
Most mechanics I know and most auto manufacturers say NOT to use engine flush/cleaner as it dislodges lots of garbage inside the engine, and that is not a good thing. That stuff does not just magically disappear, you know. Ask your own mechanic, ask at the dealership, and then do what you think is best, but don't take some guy's video advice. I asked my mechanic, and he did not look at all happy.
Holy crap that really cleaned those valves !
Would you be better off using an oil separater before getting too many miles on car?
Man's really had to give us a warning about not putting our hand near moving parts or hot parts like we are brainless. I swear in a previous video with seafoam you did the straw got caught on one of the pulley wheels for the accessorie belt and you just went right on trying to grab it 😂😂
Any side effects (negative) after using, such as it hurting catalytic converter, O2 sensors or EGR valves?
Exactly what I thought. Too much Too fast can be a problem downstream. Be careful of sensors in the intake. I'm going to try using 1/2 the can on my Buick 3.6 and then very slowly. I'm mostly worried about the exhaust Valve getting stuff hung up Under the seat which will cause it to Burn.
how is it compare to CRC valve cleaner? this Stp pro cleaner cost 69 dollor while the crc cost only 20 dollar
1.4tsi cant wait to try it on
And any result ?
subscribed! I like the results and will try this beforeCRC
Do I need to change the oil after I use intake valve cleaner just wondering pls thank you
Definitely giving this a try on my honda Gdi engine. Truly appreciate your videos thank you.
Might clog your cat
@@Seriouslydave what cat😶
@@2isjesus957 catalytic converter, anything else would be animal cruelty.
I saw this stuff on Oreillys website, wasn't sure if it was worth the $40 or not. I just replaced the intake manifold on my 03 F150 5.4, I looked at the intake valves and they didn't seem to have any chunks on them. They had a thin layer of carbon though, I may go ahead and spend the $40 to give this stuff a try.
this is for direct injection engines not port where the injector washes off the valves. I believe your 03 F150 is port injected DI engines weren't in existence in 2003.
And for the diesel engines? Cheers!
Install a methanol injection kit in. That way you have fuel (cleaner) coming from behind the valve to clean and cool air temps.
Would this be safe to run thru a supercharged engine like a gm lt4? Afraid of the chemicals stripping off the Teflon coating on the supercharger rotors.
Do you think this would work if the intake manifold is off where the valves are visible where I could just spray it on the valves? Id really like something that foams up that I can spray in the intake runners.
After the treatment should you change your oil 🛢?
Thanks for doing this for us! Great results!
Where are you inserting your camera on this engine? Did you have to pull off the whole intake manifold to get a view?
Normal operating temperatures water will do the same thing in a mist form
Would love to see a future video on a how to video putting in a scope camera in the engine to check the valves 👍
Great video check out past video, however this depends on your vehicle. I can't observe all of the valves.
@@NATESINTERACTIVEAUTO at 1:16 you show pictures of all valves. Is that not your car?
Whats on your valves to begin with.?
How about trying out MOTOR PURR Products? they have different things
Can you do this on a Audi Q5 too❓ or only domestic cars❓🤔
Where is this product available? I can't find it anywhere.
What happens with all dirty on the valve, were is going?
I use foaming action Easy Off oven cleaner. Just warm the engine, fill the valve covers and intake manifold, let it sit overnight, start the engine the next morning and VOILA! Not only does it clean, it restores worn and damaged parts! AND a cherry pie magically appears on top of the engine when the process is complete! But wait, there's more, Vince from Sham-wow comes out and details your vehicle and bangs your woman for you! Act now, operators are standing by!
Hello dear can you please test BG products specially 44k and EPR thank you
A great video 😁😁, 👍 good job.
At least you don't don't constantly press a spray button. And the ones in the container weren't even running in the engine and cold. 👍
I've used Seafoam and CRC as well.
Will this help clean piston tops too?
How were you able to see the valves with the borescope without removing the intake manifold?
By removing a sensor
@@mikecado007 What sensor might that be? I don't know of any sensors in the intake manifold that would give a borescope access to view all of the intake valves.
@@kkuenzel56 On Hyundai GDI the map MAP sensor at the front of the inlet manifold. This enable to inspect the inlet ports and valves for cylinders 2 and 3.
Way better to injectors on 3.6 Lt Dodge journey will you please show it
Where do you place the STP nozzle when you have a turbo charged direct fuel injected car? I've got a MK7 VW Golf R and carbon build up sux.
Nice video Nate !
Guy's the Snap shot of the Internal valves in this video are from off of the box not the car he's using.. Just a heads up.. Because I use the stuff like 4 times a year and it doesn't work that good! LOL.. It works but not like that. It helps to combat it but it doesn't stop it. I have a Catch can too.. We do what we can though..
Yeah, I thought something was up as never saw a product clean that good and don't think it really could.
The simulated carbon on valve is not caked on like in the intake but if those pictures are your actual pictures vs STP photos, that is impressive. If you showed the endoscope video that would be better proof.
How is it that those liquid doesn't accumulate inside & flooding the intake runners before it reach those valve higher up there? Could end up hydrolock the poston...
Prob with this stuff is chunks can break off and hold valves open
Some engines have a interference fit
Engine damage can occur.
You are better off removing the intake and scraping it all out
Gonna give it a try thanks!
Good video. Is this safe for turbo?
This
@@alaefarmestatesllc thanks....
Wow! May have to give this a try on my 2003 Ford Taurus with almost 300k miles. Great video Nate 👍
Hey there thank you for your time it doesn't go unnoticed.
@Zach Elder your Taurus is not DI. So it is not necessary for you to go this route. Perhaps using a quality injector cleaner added to your fuel tank would be a good idea.
Never done a cleaning my car just got one at 145k starting to get the power back but I don't know the condition my vehicle is in and getting it scope is expensive
Were did you buy this as it's not available in Vancouver canada
I wonder how much effect this will have on a catalytic converter.
Wow it actually dissolves carbon rather than sloughing off chunks it seems
Tell me how you see the valve with your camera where you introduced the camera to see i have the same car
That’s just fine and dandy until all that dirt goes into your sensors and then you have electronica issues
Shhh ;)
Can we do that also on a diesel engine?
I guess STP stopped selling this product. I can’t find it anywhere.
I have a question. Do you have to change your oil after you do this? My logical guess is that all the grime that has melted will fall to the bottom and get mixed with the motor oil.
Yes, do this clean just before you are scheduled to change your oil (I'm an auto engineer)
How did it work out ., did it clean the valves