Common High Mileage Issue With Mercedes-Benz M157 & M278 Twin Turbo V8 | 603 MTech Autowerks®

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  • Опубликовано: 19 янв 2025

Комментарии • 115

  • @alecalessandra9681
    @alecalessandra9681 9 месяцев назад +8

    603 MTech is the real deal. I sent Michael a note about my Mercedes this morning. He called me and discussed options to rectify what my local independent mechanic was recommending. I sincerely appreciate Michael going above and beyond when far too many people today wouldn't even take 5 minutes to follow up. If you're in the NH area, I suggest you check these guys out!

  • @AnontheGOAT
    @AnontheGOAT Год назад +37

    Ok so there is a solution, replace the gasket before the vehicle hits 100k.

    • @thenestaheapstv2447
      @thenestaheapstv2447 Год назад +1

      And spend more than the cars worth replacing it, yep :)

    • @AnontheGOAT
      @AnontheGOAT Год назад +1

      @@thenestaheapstv2447 lol ok

    • @thenestaheapstv2447
      @thenestaheapstv2447 11 месяцев назад +2

      @@AnontheGOATjust don’t complain when you sell it and someone low balls you because of the issue👻

    • @AnontheGOAT
      @AnontheGOAT 11 месяцев назад +3

      @@thenestaheapstv2447 I won’t sell it to a lowballer.

    • @User-yv7ov
      @User-yv7ov 5 месяцев назад

      @@thenestaheapstv2447 dont be a pussy and just do it yourself

  • @Hoooooooar
    @Hoooooooar Год назад +7

    So would preventative maintenance just be to replace the gasket and add sealer just in case?

  • @damirzanne
    @damirzanne Месяц назад +3

    10’s of thousands of those engines out there running every day with no issues, many of them with 300K-400K miles or more , taxi drivers use them all they long all over the Europe.. there is no engine out there , regardless of brand, that won’t have some issues at high miles … key word here is “maintenance “ and regular service … and change your oil every 3K-5K miles , flush your transmission every 10K miles, if something leaks fix it right away … these are powerhouses , and I’d never buy AMG Mercedes , because you know people who buy those , drive them hard… if you want M278 , buy nice S or GLS class, with good service records, with not more than 1-2 previous owners, and not more than 70K-80K miles , and try to get 2015 and up , but if you already have older M278 , you still have a fantastic engine , just do regular service and maintenance… if my engine goes out for any reason, I’ll just rebuild it , I don’t have money for new S class, and buying used is risky and I may end up with the same problem, at least with rebuilt engine you know what you got

  • @lawrenceralph7481
    @lawrenceralph7481 Год назад +1

    1:39 Love your clear honesty.
    ' 14 e550a cab-- a very nice time bomb. (naturally produced in 11/13)

  • @strykz63
    @strykz63 Год назад +10

    Its astonishing that he actually said that Mercedes didnt do anything when they actually did. They obviously revised this issue because the engines from beginning of 2014 and on wont have this issue. Not taking anything away from what he is saying but they did obvioulsy fix the issue. I am a Mercedes technician and its crazy how it seems to affect some engines and not all before 2014. I have seen pre 2014 with over 100k and no issues and other that have many issues. Not sure what the difference is but there are different variants of this engine. Maybe thats the case.. I dont know... Just saying!!!... I will say this the M278 2014 and after are much much better!!!

    • @IfeanyiChikelu-ci2mp
      @IfeanyiChikelu-ci2mp 8 месяцев назад +2

      Thank you so much for this, just bought a Gl450 V8, production date 03/14 with 132k miles on it. Already had a heart attack before i saw your reply! Thank you so much!
      Is there any other problems to look out for please?

  • @naushadabdullatheef1441
    @naushadabdullatheef1441 9 месяцев назад +3

    I drive a 2014 GL500 with an M278 engine. It's been leaking coolant for over 8 months. At first, I had to add coolant every 15 days, but now I need to do it every 3-4 days. I've used four 5-liter cans of coolant in this time. Every morning, I add up to 50 ml of coolant to keep it full. I watched a video and now I'm worried the coolant might mix with the engine oil, which could cause more problems. Four months ago, when I changed the engine oil, the mechanic said it wasn't mixed with coolant. But the leak has gotten worse since then, and I'm concerned the oil could now be diluted with coolant.

    • @burningflare8977
      @burningflare8977 9 месяцев назад

      You can check by using the oil dipstick, Coolant tank or by observing under the oil fill cap. You will notice a thicker than normal fluid. If it looks light brown, and not clear when you shine a light, than you may have an issue.

    • @aiyanshaikh1754
      @aiyanshaikh1754 8 месяцев назад +1

      Find your coolant leak and get it repaired. It'll cost you your car if not taken care of.

    • @aiyanshaikh1754
      @aiyanshaikh1754 7 месяцев назад

      Most common in our 2014 gl500 also was the water pump. Original waterpump pulley was black the upgraded is silver it would leak behind it. Also the bottom hose connected or the thin turbo coolant lines infront of the water pump are super common in this gl. So check that. On top of the engine the black 3side breather hose I just used gasket maker paste to stop leaks it's easy, anyhow coolant leak on this engine should be priority or else major damages. Goodluck
      Edit: I forgot to mention don't let fan or tools touch radiator. I cracked a small hole and repaired with steel epoxy/Jb weld. Working fine but just advise

  • @AC-io8qs
    @AC-io8qs Месяц назад +3

    Oh, thank the stars mine was built 09/14. Now I only have to worry about bore score, leaking timing covers, oil in the wiring harness, failing turbos, coolant leaks, and needing engine mounts every 60k. Mercedes really shat the bed with this engine.

    • @The_Panda99
      @The_Panda99 26 дней назад

      If you look at all other high performance engines you’ll see that all of them have the same problems

    • @nicholaswicks3077
      @nicholaswicks3077 15 дней назад

      Why’d you buy one if your scared of them 😂

  • @izaya_253
    @izaya_253 Год назад +9

    It seems like the 2014 cls550 fixed the issue. Idk much but mine is at 140k and seems to be running great so far

    • @Ghostrider-xd3xv
      @Ghostrider-xd3xv Год назад

      trying to get myself into a cls550. anything major i should look out for when looking at used ones?

    • @TristanMac65
      @TristanMac65 Год назад +2

      ​@@Ghostrider-xd3xvjust get you one brother. With a bumper to bumper warranty. It'll cost you about 3k. It can last 2-3 years. If the engine or other important things fail, you'll be glad you spent that 3k vs 8k or more. You can take it to a dealer for the fix OR find a reputable licensed mechanic that KNOWS how to work on these cars. Just understand how the warranty works. Understand how much the regular things (tires, brakes, insurance, putting gas in the car) will cost vs owning a more simple machine. If you can afford it and it doesn't break you then do it.

    • @richdaddy7556
      @richdaddy7556 11 месяцев назад +4

      Same here 2014 cls550 been great

  • @kaizerkayizi7557
    @kaizerkayizi7557 8 месяцев назад +1

    Good work my son,kaizer from South Africa, i opened one E63 m157 engine because of the same problem.

  • @grantconway2664
    @grantconway2664 13 дней назад

    Does Mercedes cover this under extension of warranty?

  • @Chrisjones-qi5xq
    @Chrisjones-qi5xq Год назад +2

    Are the 2015s any goog?

  • @boukm3n
    @boukm3n Год назад +8

    Damn now I’m gonna run all this info through ChatGPT-4 and see what it tells me

  • @TheUnitedStatesofAmericaUSA
    @TheUnitedStatesofAmericaUSA Месяц назад

    What about the engine in the GLS450, the M276? Is that a better choice of engine? I wanted to purchase a 550 or 63, but learned about the engine and said no. The 550 would appear to be a more desirable choice given all of the standard options, but if the GLS450 has a motor that's solid, maybe I should consider that model? Or does it suffer from the same problems? Any advice from an expert?

  • @stevemears4137
    @stevemears4137 2 месяца назад

    How many miles before you could expect to have head or valve seat issues?

  • @anawobass5382
    @anawobass5382 7 месяцев назад

    I have S63 2013 model i should replace the engine oil cooler as preventive action , to avoid mixing please advise ,

  • @milenb8401
    @milenb8401 Год назад +7

    so if the bulletin states dec-2013 does that mean that an engine from a 2015 or 2016 wont have this issue?

    • @glasser2819
      @glasser2819 Год назад +4

      yes, they won't suffer this failure - Go ahead and read the TSB applicable to your year for insight

    • @Marz78963
      @Marz78963 2 месяца назад

      2016 would be your best bet. As the older engines also had issues with the piston sleeves / scoring. They changed to steel sleeves in 2016. I have a 2016 E550 coupe with 57k miles and none of these issues. The biggest will be stay on top of maintenance. I change my oil every 3500 - 4000 miles. Do the B type service every 20k miles as recommended. I change the coolant every year. Transmission service will be next as all my vehicles I do that every 60k. But for my Mercedes I am thinking after I get the transmission serviced I may cut that time to every 35k miles get it serviced. I work remote so I don't put a lot of miles on my vehicles. But I do shorten the service recommendations and have no issues with either my Toyota's or my Mercedes because of it. Some people tend to forget changing their coolant even at the recommended times. The issues is that coolant over time can become acidic and it'll eat away at the gaskets. You see a lot of head gasket failures typically caused by poor maintenance. The only issues with the M278 engine that I may run into eventually is the plastic turbo coolant lines. Not sure why they decided to use plastic in those locations. And from the dealership that's a $2300 ordeal replacing all coolant lines.

  • @Moldyvoldym
    @Moldyvoldym 6 месяцев назад

    Were these problems remedied by the time the facelifted GLS 550's came out?

  • @mandingowarrior4603
    @mandingowarrior4603 7 месяцев назад +3

    How is there no recall on these engine? Especially since it’s a catastrophic break down. Mbz might have a class action lawsuit since they seem to know about it and the only option is to buy a new engine.

  • @ralexander9495
    @ralexander9495 Год назад

    Thank you sir. I have an '18 550 gls. What should i look out for? I have 42k miles today

  • @Superchargedtio
    @Superchargedtio 4 месяца назад

    I have a 2014 e63 my only issue have been oil leaks and coolant lines leaking

  • @Gabirimaru
    @Gabirimaru Год назад +1

    Hi Guys,
    We have a 2013 CLS 550 I bought the car used. In my ownership oil changed at every 5k, LMolly oil only and under warranty had the tensioners changed, and now at the recent oil change discovered metal shavings in filter and old oil. My mechanic suggested to sell it and get a new vehicle. He explained that most likely it will get worse and will end up in a complete engine rebuild. I just want to understand what is causing this issue as I really like the car and if I am going to get another one it will be the same model.
    Thank you!

    • @thatsmeufo
      @thatsmeufo Год назад

      Me too.
      Last thing I read was cold weather and cold starts.
      What would be the cost of the engine rebuild? Do you have an estimation?

    • @ralph02136
      @ralph02136 Год назад

      How many miles?

    • @Gabirimaru
      @Gabirimaru Год назад

      180k

    • @strykz63
      @strykz63 Год назад +2

      Get the same car just production date after 12/13.. problem solved.. i work on these there good engines the earlier ones (2012-late 2013) just had issues when they aged.. after 14 the tensioners are updated and the oil mixing issue is fixed

    • @iceapella15
      @iceapella15 11 месяцев назад

      I hear a very slight knocking on cols start on my 14 gl63 should i worry about anything? Or wat can i do to stop it​@strykz63

  • @ytpro9405
    @ytpro9405 5 месяцев назад

    This guy is cool at least he warns you and I agree with him as I work on these cars. Yes it’s simple to change gaskets before this happens but some people get caught out. I thank him.

  • @topdawg1692
    @topdawg1692 4 месяца назад

    great content!! keep it up!!

  • @PaisteZildjian
    @PaisteZildjian 3 месяца назад +1

    So if you take it to an MB dealer what will they charge for a rebuilt engine and installation? 20-25K? Can't buy anything close to this car for that. Still worth it in my opinion. My ML550 rolls like nothing I've ever driven. She has personality, and drives with poise and grace. These are the finest cars in the world. It's not a car; it's like a good friend. Can't put a price on that.

  • @sMFq11
    @sMFq11 Год назад

    Thanks for the info keep away from the 2013s I guess, has the gasket been revised then I assume?

  • @shlbi4248
    @shlbi4248 3 месяца назад

    So what’s the best engine on Mercedes don’t have problems u got me off i was about to buy a cls550

  • @jermainephillips5179
    @jermainephillips5179 Год назад +4

    Obviously oil and coolant never good.depending on how long the event was happening the motor may not be destroyed if the problem is fixed soon enough.i had a custumer that drove a carwith bad headgasket for 6 mos before he fixed it.drove it another 4yrs after a couple oil changes to flush out the choclate milk.just a lil observation from my 30 plus yrs of wrenching.im.sure MB were changing the cover seal when custumers got oil in coolant and not doing complete motor swaps.

  • @gunnermoore4529
    @gunnermoore4529 Год назад +1

    Great info. Do you see the same issue on the m157 in the amg’s? Currently looking for a cl63.

    • @CornerOfTheOval
      @CornerOfTheOval Год назад +1

      I think on his other video he says yes. He said they are the same engine but the m157 has bigger turbos

    • @AnontheGOAT
      @AnontheGOAT Год назад +7

      @@CornerOfTheOvalm157 is a 5.5 and the m278 is 4.7. Different displacement.

    • @godzsonjl2983
      @godzsonjl2983 Год назад +2

      @@AnontheGOAT Basically the same block with a different bore and stroke to increase the displacement to 5.5.

    • @AnontheGOAT
      @AnontheGOAT Год назад +1

      @@godzsonjl2983 I know but still had to point it out that the displacement is different.

    • @mauisuzuki7857
      @mauisuzuki7857 Год назад +4

      And one major difference is that the m157 is hand built which is a huge standard in the automobile industry

  • @andrehafrian408
    @andrehafrian408 Год назад +1

    So does the 2012-2014 CLS63 AMG has the same engine and issues? Thinking of selling my CTS-V and getting these cars. @603MTechAutowerks

    • @strykz63
      @strykz63 Год назад +3

      Its possible.. as long as your production date is 01/14 or newer your good.. but i have seen CLS 63s with high mileage pre 2014 with no issues

  • @theniceones1613
    @theniceones1613 Год назад

    *How problematic is the 2017 GLS 550? Same as this one?*

  • @StickShiftQueen829
    @StickShiftQueen829 11 месяцев назад

    What if all that was fixed before it was for sale?

  • @antonio325i
    @antonio325i Год назад +1

    Thanks for the information 👍

  • @BigRatchet710
    @BigRatchet710 4 месяца назад

    How is the 2016 model year ?

  • @danieltorres-ce6jp
    @danieltorres-ce6jp 4 месяца назад

    Is better Mercedes Benz gls 550 2017 ?

  • @timclark6793
    @timclark6793 Год назад +2

    Good video, thanks!

  • @Elvis20101
    @Elvis20101 8 месяцев назад

    Who built the engine?

  • @basilharmony3389
    @basilharmony3389 3 месяца назад

    Me over here with a 2012 ml550, 140,000 miles 😐, wish me luck 🫡, so far runs like a top.

  • @PredatorDK
    @PredatorDK Год назад

    So which MB V8 is the best one to go for?

    • @tonychavez2083
      @tonychavez2083 11 месяцев назад +1

      Older M119 and even M113 are ultra reliable

  • @pgill2682
    @pgill2682 Год назад +3

    My man Mike P dropping that fire 🔥. Thank you sir 🙏

  • @jeffreyhebda6709
    @jeffreyhebda6709 Год назад +2

    So, my ml 63 motor has 88k miles on it and runs terrific ! This oil- coolant mixing is awful and I want to be able to avoid this problem. Can it be avoided on a well maintained m157 motor with the upgraded timing chain ? Truly, this one man, hand built motor runs terrific.....now
    Thank you for the excellent videos and information ! J H

  • @optimusprime1634
    @optimusprime1634 Год назад +1

    Looking at a 2017 GLS 550 and a 2019 GLS 2019. Do they have the same problem?

    • @strykz63
      @strykz63 Год назад +3

      No they dont... im a Mercedes technician.. it was updated in 01/14 and on

  • @doca8792
    @doca8792 8 месяцев назад +2

    M113/M113k
    As close to bulletproof as you can get

  •  Месяц назад

    Thought this wasn’t an issue after 2015 and up

  • @jerryghoujalou5150
    @jerryghoujalou5150 Год назад +2

    Can you please let me know on the 2010 Mercedes V8 TwinTurbo engines are good I’m gonna buy one I don’t know how good the engines are please let me know it’s kind of odd hundred thousand mile on it engineers good now but I just wanna know how good the motor is. Thank you very much.

    • @jerryghoujalou5150
      @jerryghoujalou5150 Год назад

      By the way, is the S 45

    • @mauisuzuki7857
      @mauisuzuki7857 Год назад

      They didn’t make a twin turbo v8 in 2010!! 2012 is when they started and the Mercedes l didn’t release until 2013 with a ttv8

    • @Mike-ht1ou
      @Mike-ht1ou Год назад

      m278 came out in 2010 in the S550 CL550

    • @strykz63
      @strykz63 Год назад

      ​@@Mike-ht1outhey came in 2011 for model year 2012 with v8tt in S-class and CL-class... 2010 is still the M273 engine

  • @seane2064
    @seane2064 Год назад

    My m278 just went out at 140k miles. Do anyone know what other engine I can use that’s also a V8 besides the m278?

    • @strykz63
      @strykz63 Год назад

      Same engine just get the updated one 2014 and newer.. i belive these engines ran up to 2017

    • @linopks1638
      @linopks1638 Год назад

      GLS550 used m278 till 2019

    • @strykz63
      @strykz63 Год назад

      @@linopks1638 ok.. yah your right

  • @aLgProduction
    @aLgProduction Год назад

    Thanks for sharing.

  • @exceptionallife4768
    @exceptionallife4768 9 месяцев назад

    Bulletin says coolant going into OIL.. if you have oil in COOLANT … maybe that’s oil cooler

  • @slotank
    @slotank Год назад

    I guess when your timing chain gets replaced this gasket gets replaced at the same time?

    • @glasser2819
      @glasser2819 Год назад

      it's a different job. All distinct failure are worthwhile

    • @slotank
      @slotank Год назад +1

      @@glasser2819 but that cover needs to come off for the timing chain to be done so the seal should get replaced

    • @mauisuzuki7857
      @mauisuzuki7857 Год назад

      @@slotank the heads do not come off, only the valve cover.

    • @slotank
      @slotank Год назад +1

      @@mauisuzuki7857 i got my timing chain done by the dealership recently they took the heads off on the m157 and replaced that gasket as well

  • @dvaesedum
    @dvaesedum Год назад +1

    People really change their oil 10,000 miles between and winder why shit like this happens

  • @tonychavez2083
    @tonychavez2083 Год назад

    Good info, the key is inspection every other week. 1st slight sign of milkshake in oil cap or expansion tank means front cover needs to come off. Either way big money job.

  • @UTRC51
    @UTRC51 Год назад

    Has anyone got that seal part number? I'm not afraid to work on my mercs

  • @jonthompson8807
    @jonthompson8807 8 месяцев назад

    Is it better solution getting an m156 lol

  • @crazyyakuza8741
    @crazyyakuza8741 10 месяцев назад +3

    Out of 60k m278 and you guys actually believe that these motors are blowing up everywhere ? This guy is repair shop of course he’s going to tell you Al this bs .

    • @603benztech
      @603benztech  10 месяцев назад

      Chill 🛑

    • @lifesgifts748
      @lifesgifts748 8 месяцев назад

      If its mixing its not his fault hes just letting you kno what to look for

  • @benetaue
    @benetaue 7 месяцев назад

    Could be worse rubber failure twins😂

  • @nova_squad_bossx1818
    @nova_squad_bossx1818 Год назад +2

    So basically don't my m157 or m28 well I'm fuckked

    • @gottliebdee263
      @gottliebdee263 Год назад

      Can you repeat that, but this time in coherent English.

    • @jaystoner9475
      @jaystoner9475 Год назад

      So Mercs are junk. Sold my GL350, glad I did.Made me nervous

    • @45KAI
      @45KAI 11 месяцев назад +1

      Lol stop going off of one technicians opinion plenty of pre 2014 m278 kicking it with high miles including mine 2013(136k)
      Take care of your car and stay on top of maintenance problem solved this guys job is to fix broken shit

  • @vanhanliiton7232
    @vanhanliiton7232 Год назад +3

    Seems like a motor better To stay away

    • @Jellbell46
      @Jellbell46 Год назад +1

      I have owned 3. They all ran great and were well maintained. The biggest issue ive had was control arms 1k dollar fix

    • @vanhanliiton7232
      @vanhanliiton7232 Год назад

      @@Jellbell46 what was the kms and how long did u own them

    • @mauisuzuki7857
      @mauisuzuki7857 Год назад +3

      I have a sl63 and a e550 coupe, both tuned. The sl is a 2013 at 29000 miles and the e550 has 77000 miles and has been driven hard for about 40k on a tune making 570whp. The car runs awesome and has zero leaks or any issues with mixing……I’ve seen these cars go 160+ without any issue

  • @vanhanliiton7232
    @vanhanliiton7232 Год назад +5

    M113 way better engine

    • @jeffreyhebda6709
      @jeffreyhebda6709 Год назад +3

      Yes, m113 is a beauty ! We own one. Also own the m157, runs beautiful !, at 88k miles. Water - oil mix is bad news. Hope Mike can come up with a repair solution for all. My ml63 new was 138k dollars ( I didn’t pay that !) as I saw the paperwork. Your telling me a beautiful rig like a ml63 at that price point will only last 99k=say 110k miles ? That doesn’t seem right. Hmmmmmm

    • @e.e9331
      @e.e9331 Год назад

      @@jeffreyhebda6709 Do oil changes (goes without saying fully synthetic 5W40) every 5k, high quality synth oil protects metal bits and has additives that keep the gaskets from going brittle/thinning. Switch to highmileage oil if you can.
      Every 30k add liqui moly motor oil treatment, it rejuvenates gaskets.
      Every 50k do a coolant flush, coolant from MB ONLY unless you know what you're doing
      Keep the RPMs >2000 until engine reaches optimal temp
      Remember heat and old oil is the N1 killer of plastics/gaskets in the enginebay.
      My 2013 GL550 with M278 I bought brand new with 0miles in 2012 now has 269.000. I did EVERYSINGLE engine related service myself, even during the warranty period I was doing oil changes myself every 5k. (Noway in hell im stretching oil change interval to 10.000miles!).
      All I did to the engine since I bought it was:
      fluid changes and filters
      waterpump+thermostat ~@135k
      dreaded CPS+camshaft adjuster magnets 2 times, first set @90k second set @200k
      sacrificial CPS+camshaft adjuster magnet harness extension
      coolant plastic hose on top forward center of the engine @160k.
      Thats all I did. The catastrophic problems as mentioned in the video are the result of people not doing maintenance treating it like a gm truck from 90s and following MB dealer oil change intervals.
      90% of the timing chain and VVT related problems can be solved by shortening the fluid change intervals. Even shorter if car is used in extreme temp climates like up north or down south.

    • @glasser2819
      @glasser2819 Год назад

      ​@@jeffreyhebda6709solution is to repair it early as maintenance or exchange engine after all

  • @1995RangeRover
    @1995RangeRover 8 месяцев назад

    Sounds pretty hopeless.

  • @ThaRamboOG
    @ThaRamboOG Год назад

    Basically to summit up, this engine is very cheaply built with all of its plastic components

  • @AndrewJacobson-cq2om
    @AndrewJacobson-cq2om Год назад

    Best advice don't buy any of these things!! Buy a Lexus!!