Common High Mileage Issue With Mercedes-Benz M157 & M278 Twin Turbo V8 | 603 MTech Autowerks®
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- เผยแพร่เมื่อ 19 ก.ย. 2024
- In this video, we discuss a common issue we have been seeing on Mercedes M278 & M157 AMG V8 Biturbo engines up to production date 12/2013.
Watch this video to learn about the Engine oil & coolant mixing causing internal engine failure on these engines.
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Musician: Jeff Kaale
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!
Ok so there is a solution, replace the gasket before the vehicle hits 100k.
And spend more than the cars worth replacing it, yep :)
@@thenestaheapstv2447 lol ok
@@AnontheGOATjust don’t complain when you sell it and someone low balls you because of the issue👻
@@thenestaheapstv2447 I won’t sell it to a lowballer.
@@thenestaheapstv2447 dont be a pussy and just do it yourself
1:39 Love your clear honesty.
' 14 e550a cab-- a very nice time bomb. (naturally produced in 11/13)
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!!!
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?
great content!! keep it up!!
Good work my son,kaizer from South Africa, i opened one E63 m157 engine because of the same problem.
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.
So would preventative maintenance just be to replace the gasket and add sealer just in case?
Damn now I’m gonna run all this info through ChatGPT-4 and see what it tells me
Good video, thanks!
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.
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.
Find your coolant leak and get it repaired. It'll cost you your car if not taken care of.
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
Thanks for the information 👍
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.
How is the 2016 model year ?
My man Mike P dropping that fire 🔥. Thank you sir 🙏
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!
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?
How many miles?
180k
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
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
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
Were these problems remedied by the time the facelifted GLS 550's came out?
Are the 2015s any goog?
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.
Exactly
Thanks for sharing.
so if the bulletin states dec-2013 does that mean that an engine from a 2015 or 2016 wont have this issue?
yes, they won't suffer this failure - Go ahead and read the TSB applicable to your year for insight
I have S63 2013 model i should replace the engine oil cooler as preventive action , to avoid mixing please advise ,
Thanks for the info keep away from the 2013s I guess, has the gasket been revised then I assume?
Is better Mercedes Benz gls 550 2017 ?
Thank you sir. I have an '18 550 gls. What should i look out for? I have 42k miles today
Great info. Do you see the same issue on the m157 in the amg’s? Currently looking for a cl63.
I think on his other video he says yes. He said they are the same engine but the m157 has bigger turbos
@@CornerOfTheOvalm157 is a 5.5 and the m278 is 4.7. Different displacement.
@@AnontheGOAT Basically the same block with a different bore and stroke to increase the displacement to 5.5.
@@godzsonjl2983 I know but still had to point it out that the displacement is different.
And one major difference is that the m157 is hand built which is a huge standard in the automobile industry
*How problematic is the 2017 GLS 550? Same as this one?*
What if all that was fixed before it was for sale?
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.
It seems like the 2014 cls550 fixed the issue. Idk much but mine is at 140k and seems to be running great so far
trying to get myself into a cls550. anything major i should look out for when looking at used ones?
@@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.
Same here 2014 cls550 been great
So does the 2012-2014 CLS63 AMG has the same engine and issues? Thinking of selling my CTS-V and getting these cars. @603MTechAutowerks
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
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.
By the way, is the S 45
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
m278 came out in 2010 in the S550 CL550
@@Mike-ht1outhey came in 2011 for model year 2012 with v8tt in S-class and CL-class... 2010 is still the M273 engine
Looking at a 2017 GLS 550 and a 2019 GLS 2019. Do they have the same problem?
No they dont... im a Mercedes technician.. it was updated in 01/14 and on
Who built the engine?
So which MB V8 is the best one to go for?
Older M119 and even M113 are ultra reliable
Bulletin says coolant going into OIL.. if you have oil in COOLANT … maybe that’s oil cooler
M113/M113k
As close to bulletproof as you can get
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?
Same engine just get the updated one 2014 and newer.. i belive these engines ran up to 2017
GLS550 used m278 till 2019
@@linopks1638 ok.. yah your right
I guess when your timing chain gets replaced this gasket gets replaced at the same time?
it's a different job. All distinct failure are worthwhile
@@glasser2819 but that cover needs to come off for the timing chain to be done so the seal should get replaced
@@slotank the heads do not come off, only the valve cover.
@@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
Could be worse rubber failure twins😂
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 .
Chill 🛑
If its mixing its not his fault hes just letting you kno what to look for
Has anyone got that seal part number? I'm not afraid to work on my mercs
People really change their oil 10,000 miles between and winder why shit like this happens
Is it better solution getting an m156 lol
So basically don't my m157 or m28 well I'm fuckked
Can you repeat that, but this time in coherent English.
So Mercs are junk. Sold my GL350, glad I did.Made me nervous
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
Sounds pretty hopeless.
M113 way better engine
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
@@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.
@@jeffreyhebda6709solution is to repair it early as maintenance or exchange engine after all
Seems like a motor better To stay away
I have owned 3. They all ran great and were well maintained. The biggest issue ive had was control arms 1k dollar fix
@@Jellbell46 what was the kms and how long did u own them
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
Basically to summit up, this engine is very cheaply built with all of its plastic components
Best advice don't buy any of these things!! Buy a Lexus!!