Gsav

totally agree. But principle aside, 30 hrs of labor and it seems the engine needs to come out for the repair means you have to pray every last nut gasket and hose is connected properly when it all goes back in. Say you’re out of warranty and parts are scarce or back ordered. I won’t be happy with an oil leak but if it doesn’t lead to something catastrophic I guess I’ll buy an absorbent mat for the garage floor before I’d ask an Indy to pull the engine. But absolutely none of us should have to worry about a seal leaking in a engine that costs tens of thousands of dollars

RevisionCuda

Anyone with a 2020+ have oil leaks? i dont think so yet. mileage probably too low

I had an oil pan leak which was fixed.

2020 17000km

bobblehead

In these days and age, finding parts are no longer easy. My car was in the shop for exactly 1 month waiting one part to arrive at a time. Car rental cost me well over $1,000 and dealer had already picked up a small portion of the bill as well (as goodwill). My thinking was pay now or pay a lot more later. 😊

PeterUbers

Are other m177/8 engines also experiencing the rms leak (2018 to 2020)?

ex: c63S, gts....

Rover338

Out of curiosity I called another Mercedes dealer to see if they happened to have oil separators in stock, and they said they were NOT on backorder and were available in the warehouse and could get them in 2-3 days. I told the Chevy dealer about this, and they said they would contact that dealer again (happened to be the same one they called in the first place and were apparently told there on backorder) Got contacted today by service manager saying they are not going to be replacing the separators for me because 1) they aren't leaking, 2) they have all the other parts for their technician to start putting the car back together (been apart for almost 2 weeks) 3) It wasn't on the original $9650 quote that I got from Mercedes to have them replaced. So unfortunately the Chevy dealer is not going to be doing the oil separators for me while the engine is out of the car. But I should be getting it back in a day or so. I have not made up my mind as to whether I'm going to bring it to a local indy shop and have them do the separators after just having the RMS done. I just want to drive the damn thing!!

Sunbeltgolfer11

Has to be very frustrating. However, if the separators are the cause of excessive pressure, pushing oil past the RMS you will surely see this again. No way of knowing how soon the seal will fail, but, I would surely expect that it will. If it were my car I'd have them replaced after you get it back. I'm **** and OCD and it would drive me crazier having to worry about it.

chassis

Thanks for the update and good news that the separators are not backordered.

The separators are not leaking because...they are plugged!

If you do decide to have the separators replaced, it would help other owners if you could post the new part number, and the old part number (one that is on your car now). This would indicate if MB has made any changes. Part number change means something about the part has changed.

bobblehead

I have listed the separators part # on post #56. It does show this part # has replaced 2 other part # accordingly.

TugboatBill

My suggestion is to drive over to the Mercedes dealer and buy the separators. Take them over to the Chevy dealer and have them put them on. You can negotiate with the service manager for a reasonable fee for the added labor. Doing them later will be more expensive as they have it apart now.

bobblehead

^ makes total sense (since they have the tranny & engine out already). It will cost you a lot more in the future + tons of inconveniences and time wasted

Rover338

The chevy dealer and the technician doing the work do not want the car apart any longer, they are already in the process of putting it back together unfortunately. They said it would have been 3 days for the separators to arrive at the dealer as they needed be ordered from Mercedes (were not in stock at mercedes dealer). Your right I should have tried harder to get them to hold off putting it back together if I were to pay for the oil separators and labor to replace them while motor is out. Now I'm going to end up paying more to get them replaced somewhere else.

PeterUbers

Are there two issues:
1 - oil separators clog up
2 - RMS leaks

or does #1 cause #2?

chassis

The operative theory says that 1 causes 2. In one of the several RMS threads a dealer diagnosis stated this.

L M

Are the oil separators emissions related?

If so, then this should be covered by emissions warranty?

chassis

Yes and yes. This has been discussed in a thread in this site. Not sure if dealer discretion is involved or if other conditions/stipulations apply.

The slippery MB (scummy) policy slope to be aware of is that MB might pay for new separators if they fail and if they agree to cover them under emissions warranty. Whether or not collateral damage (rear main crankshaft oil seal) is also covered is a question to be answered. Search for the other thread and message the owners for their experience.

bobblehead

https://app.truvideo.com/v/mcTJSrXS?...b9pt2y7xrakBI=

Even porsche cayenne has the separators failed … this example failed at 50,000 miles. The guy on the video said the parts are emissions and yet said no warranty due to mileage.

Rover338

Well, got the car back from Chevy on Friday. Everything seems good at the moment, only thing I notice is a bit of a engine inside the cabin down near the left foot well where the hood release is, could just be in my head though, its only when i step on and off the gas and engine rpms vary and at low speeds is it noticeable. I still have to get the oil separators changed. The dealer does have them but ONLY the separators, apparently the whole assembly with the vent lines and v-ribbed belt is on backorder. The whole assembly that is on backorder is a little over $1000, compared to just the left and right separators is under $600. Do I HAVE to replace the vent lines and ribbed belt aswell? That is what Id like to do but Ive never seen a full parts diagram of what this looks like and if that is susceptible to being clogged or if just doing the separators is enough.

PeterUbers

kudos to the Chevy tech!

bobblehead

my post #56 has both of these part #. Dealer said everything goes with the separators during replacement

chassis

The poly-v belt does not need to be replaced. This is a stick-it-to-you while-we're-in-there charge.

bobblehead

The 2 belts are like $20 in total parts cost

Rover338

When I talked to the parts guy at the dealer he first got my VIN and looked up the oil separators and said they're on backorder. I then told him these part numbers and he said the oil separators individually (177-078-55-00 + 177-078-54-00) were available. I told him I want the separators, the vent line (177-010-29-00 + 177-030-00 + 177-010-06-03) and v-ribbed belt (003-993-41-96 + 003-993-42-96) and he said that's included all as one and is on backorder.....

Bullishness

Anyone whos looking to buy a E63 w213 should definitely look into if the vehicle has replaced RMS. This is way too common and its not a if you're going to have to replace it, more like a when.

chassis

Porsche EA825 4.0L TT V8 engines are starting to show some vapor separator failures. No RMS failure but CEL and misfire requiring dealer visit. Customer pays for separator replacement if out of warranty.

Bullishness

Anyone have the part number for the RMS? Dealership called saying the part is now discontinued, and they are trying to find the updated part number?