2024 AMG oil

[Scott Baer]

Hello all. bought a 2024 Merc Benz AMG GLE 63s last year. Twin-turbocharged 4.0-liter V8 (M177). At 2500 miles, it developed a bearing knock and after many weeks at the dealership (tearing the motor down), MB replaced the vehicle. At 3000 miles, this motor is having same knock!!! I have not even addressed it yet with the dealership, other than an early oil change at 6,000 miles. I had them save a sample for me to get analyzed.

I am concerned that the oil is too thin. The knock is only appearing once it gets warm and only at idle. It does not get worse when increasing throttle. In fact, it goes away. My question is what should I be focusing on the oil analysis and should I spend extra $$ for additional viscosity tests? What test and from who might you recommend?

BTW... yes, both vehicles were totally babied during break-in. I was very careful not to exceed recommendations that are posting in view on a sticker in the windshield and addressed several places in the manual.

 

[BMWTurboDzl]

Hello all. bought a 2024 Merc Benz AMG GLE 63s last year. Twin-turbocharged 4.0-liter V8 (M177). At 2500 miles, it developed a bearing knock and after many weeks at the dealership (tearing the motor down), MB replaced the vehicle. At 3000 miles, this motor is having same knock!!! I have not even addressed it yet with the dealership, other than an early oil change at 6,000 miles. I had them save a sample for me to get analyzed.

I am concerned that the oil is too thin. The knock is only appearing once it gets warm and only at idle. It does not get worse when increasing throttle. In fact, it goes away. My question is what should I be focusing on the oil analysis and should I spend extra $$ for additional viscosity tests? What test and from who might you recommend?

BTW... yes, both vehicles were totally babied during break-in. I was very careful not to exceed recommendations that are posting in view on a sticker in the windshield and addressed several places in the manual.

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Normally this sort of thing points to an assembly error or manufacturing defect.
The only issue viscosity wise is fuel dilution so just send in a sample and see what they tell you.
If Mercedes recommends 229.50, .51, or .52 you're already getting the thickest oil the test for.

 

[slo town]

Huge BUMMER, but that's not an oil problem.

Scott

 

[Pew]

The same back-to-back issues on the same model but two different brand new vehicle would lead me to believe it's time to run away from that line of cars instead of figuring what oil to use.

 

[bdcardinal]

Aren't AMG engines supposed to be hand built and all that?

 

[edyvw]

Yeah, that is not oil issue. Inadequate viscosity can lead to premature wear over xxxxx miles. Or some excessive wear on track for example. But those bearings, that is a manufacturing issue.
It could be that they have issues with the supplier. I would return car, get something else.

 

[Rinspeed]

The same back-to-back issues on the same model but two different brand new vehicle would lead me to believe it's time to run away from that line of cars instead of figuring what oil to use.

That's kind of the way I see it. Very sorry to hear of your troubles.

 

[scrllock]

Assuming you didn't drain the oil for some budget dexos supertech or whatever, it's hard to believe that the rather stout MB oil would cause any problems, especially at that mileage. Almost certainly a manufacturing error, I would definitely not buy another one if that was an option.

 

[loneryder]

Is that really an AMG engine or just a 177? Bearings not hardened properly? MB has had that problem with suppliers before.

 

[Scott Baer]

Is it possible that MB uses thinner oil from factory for break-in and that is what is going on here? Might it go away after this oil change where they put in 5w-40?

 

[Scott Baer]

Is that really an AMG engine or just a 177? Bearings not hardened properly? MB has had that problem with suppliers before.

AMG M177

 

[crashz]

Wow! First off, thanks for the tear down pictures.

Second, sorry to hear about the trouble. I hope the dealer can make it right.

I've never seen bearings with machining marks in them. But I've never seen the inside of a Mercedes engine either. However, the spots in the bearings would indicate contamination. Either grit, metals or chemical. You'd thing the filter would protect the bearing from any abrasive, but it may not be. Or is there something corrosive in the oil? To thin of an oil would look as if it were slightly polishing the bearings in the high stress areas.

Was anything in the bottom of the oil pan or in the oil filter?

 

[kschachn]

Is it possible that MB uses thinner oil from factory for break-in and that is what is going on here? Might it go away after this oil change where they put in 5w-40?

The winter rating is irrelevant. Use an oil the proper Mercedes-Benz approval.

No, MB does not use a thinner oil for break-in. If you have that kind of wear using the proper oil then there is a materials or assembly error as others have noted.

 

[Scott Baer]

Wow! First off, thanks for the tear down pictures.

Second, sorry to hear about the trouble. I hope the dealer can make it right.

I've never seen bearings with machining marks in them. But I've never seen the inside of a Mercedes engine either. However, the spots in the bearings would indicate contamination. Either grit, metals or chemical. You'd thing the filter would protect the bearing from any abrasive, but it may not be. Or is there something corrosive in the oil? To thin of an oil would look as if it were slightly polishing the bearings in the high stress areas.

Was anything in the bottom of the oil pan or in the oil filter?

 

[Chris142]

I have done some services on new Mercedes and was frightened by the amount of glitter that was in the oil. Looks like it's more common than I thought.

 

[Scott Baer]

Thank you! I do not now. These pics are from the first vehicle and they replaced that one. I really don't know what was in that oil.

Are those pics indicative of abnormal bearing wear? I'm assuming the new motor (replaced vehicle) would show similar being that it is knocking just like the first one.

 

[Scott Baer]

As I understand it, this motor is used in a lot of high performance vehicles and is touted as quite reliable. I am surprised at my issues.

 

[02SE]

Thank you! I do not now. These pics are from the first vehicle and they replaced that one. I really don't know what was in that oil.

Are those pics indicative of abnormal bearing wear? I'm assuming the new motor (replaced vehicle) would show similar being that it is knocking just like the first one.

Yes, you don't want to see those kinds of marks on bearings at any time, but especially not from a new engine. That's a problem with the design, the manufacturing process, assembly, or a combination thereof.

 

[BMWTurboDzl]

Are those pics indicative of abnormal bearing wear? I'm assuming the new motor (replaced vehicle) would show similar being that it is knocking just like the first one.

Yes. The motor was done.

 

[Scott Baer]

Yes. The motor was done.