2018 W213 E63S Sedan - 41k miles, rear main seal seal/retainer failure
Out Of Control!!
Joined: Sep 2018
Posts: 14,679
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From: unbegrenzt
2017 GLE350 4MATIC
What would be the downside to modifying the factory catch can (vapor separator) by removing any check valve/pressure limiter or filter?
Besides those items, it’s just a plastic labyrinth. Dead simple.
The other options are replace with a new factory part (which will fail again, possibly taking the rear main seal with it) or an aftermarket catch can.
Besides those items, it’s just a plastic labyrinth. Dead simple.
The other options are replace with a new factory part (which will fail again, possibly taking the rear main seal with it) or an aftermarket catch can.
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Joined: Jun 2023
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s63 coupe 2018
2018 s63 coupe oil separators faulty
Hi. I have a 2018 s63 under CPO Warranty. At 60k miles I took it in for a routine oil change and they noted an oil leak and I needed to make appointment to fix. That appointment was 2 months later so this past Memorial Day at 8am I took it in. they gave me a new s class for a loaner. s500.
I have never seen any oil in my super clean garage mind you.
I drop it off knowing this was a free warranty fix and a week later. Mercedes Benz of Austin texted me that it would be a $5700 fix and that the oil separators were out. I said I am sorry, I am still under cop warranty. Mind you it is at 79,000 miles. I drive 200 miles a day. The car hasn't skipped a beat. It never shown low oil light. They said warranty won't cover it. I laughed and said, no I have a cop warranty and you are telling me that faulty separators were installed originally. They said their service supervisor agreed that this is not under warranty.
I don't know what to do. I bought a new daily driver last week and going to park this car for Sunday drives but now I feel like Im living on borrowed time. The extended warranty kicks in next week for two years. What do I do? I asked them for photos of the leak and they said they cant photograph it.
I have never seen any oil in my super clean garage mind you.
I drop it off knowing this was a free warranty fix and a week later. Mercedes Benz of Austin texted me that it would be a $5700 fix and that the oil separators were out. I said I am sorry, I am still under cop warranty. Mind you it is at 79,000 miles. I drive 200 miles a day. The car hasn't skipped a beat. It never shown low oil light. They said warranty won't cover it. I laughed and said, no I have a cop warranty and you are telling me that faulty separators were installed originally. They said their service supervisor agreed that this is not under warranty.
I don't know what to do. I bought a new daily driver last week and going to park this car for Sunday drives but now I feel like Im living on borrowed time. The extended warranty kicks in next week for two years. What do I do? I asked them for photos of the leak and they said they cant photograph it.
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Joined: Jul 2013
Posts: 2,594
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From: Toronto, Ont, Canda
go fast grocery getter wagon
Hi. I have a 2018 s63 under CPO Warranty. At 60k miles I took it in for a routine oil change and they noted an oil leak and I needed to make appointment to fix. That appointment was 2 months later so this past Memorial Day at 8am I took it in. they gave me a new s class for a loaner. s500.
I have never seen any oil in my super clean garage mind you.
I drop it off knowing this was a free warranty fix and a week later. Mercedes Benz of Austin texted me that it would be a $5700 fix and that the oil separators were out. I said I am sorry, I am still under cop warranty. Mind you it is at 79,000 miles. I drive 200 miles a day. The car hasn't skipped a beat. It never shown low oil light. They said warranty won't cover it. I laughed and said, no I have a cop warranty and you are telling me that faulty separators were installed originally. They said their service supervisor agreed that this is not under warranty.
I don't know what to do. I bought a new daily driver last week and going to park this car for Sunday drives but now I feel like Im living on borrowed time. The extended warranty kicks in next week for two years. What do I do? I asked them for photos of the leak and they said they cant photograph it.
I have never seen any oil in my super clean garage mind you.
I drop it off knowing this was a free warranty fix and a week later. Mercedes Benz of Austin texted me that it would be a $5700 fix and that the oil separators were out. I said I am sorry, I am still under cop warranty. Mind you it is at 79,000 miles. I drive 200 miles a day. The car hasn't skipped a beat. It never shown low oil light. They said warranty won't cover it. I laughed and said, no I have a cop warranty and you are telling me that faulty separators were installed originally. They said their service supervisor agreed that this is not under warranty.
I don't know what to do. I bought a new daily driver last week and going to park this car for Sunday drives but now I feel like Im living on borrowed time. The extended warranty kicks in next week for two years. What do I do? I asked them for photos of the leak and they said they cant photograph it.
***** see post # 95 in this thread for details *****
Last edited by bobblehead; Jun 9, 2023 at 04:49 PM.
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From: Cary, NC
2024 AMG EQE SUV , 2021 E63S Wagon - gone, 2018 E63S Sedan - gone
The extended warranty statement says "engine " as one of the items. It does not specify individual components of the engine and there are no engine components listed as excluded so the RMS is covered. However, the oil separators are part of the original emissions warranty and thus are under a mileage limit of 80,000 miles.
Last edited by HBerman; Jun 9, 2023 at 05:01 PM.
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2019 AMG E63S Sedan, Past-16 MB's and AMG's since 1980👍
Does our MBWORLD HAVE AN ADMINISTRATOR? If so, can we CONSOLIDATE ALL THESE M177 ENGINE MULTIPLE REAR MAIN SEAL AND OIL SEPARATOR discussions into ONE TOPIC INCLUDING the threads. I will then forward this to MB here in Atlanta and AMG in Affalterbach. If we have the person within our group, you can contact me at 404-510-0165 or rdj194709@gmail.com. David James
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Joined: Feb 2007
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From: Cary, NC
2024 AMG EQE SUV , 2021 E63S Wagon - gone, 2018 E63S Sedan - gone
Does our MBWORLD HAVE AN ADMINISTRATOR? If so, can we CONSOLIDATE ALL THESE M177 ENGINE MULTIPLE REAR MAIN SEAL AND OIL SEPARATOR discussions into ONE TOPIC INCLUDING the threads. I will then forward this to MB here in Atlanta and AMG in Affalterbach. If we have the person within our group, you can contact me at 404-510-0165 or rdj194709@gmail.com. David James
Last edited by HBerman; Jan 29, 2024 at 06:39 PM.
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2019 AMG E63S Sedan, Past-16 MB's and AMG's since 1980👍
My TWO CENTS worth is that I've not had ONE oil leak in the other FIFTEEN Mercedes Benz and AMG automobiles I've owned over 43 years...I would certainly hope that I wouldn't lose an engine in a $126,000 automobile with a hand assembled engine in 4 years wouldn't you? 2006 SL55 AMG w/P30 performance package, 2013 SL63 AMG, 2018 AMG GT C, 2018 E53 AMG and the 2019 E63S AMG...ALL good EXCEPT the E63S WITH THE M177 LS2 version engine!? Houston I think we have a problem with the LS2 engine🤔
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From: Cary, NC
2024 AMG EQE SUV , 2021 E63S Wagon - gone, 2018 E63S Sedan - gone
My TWO CENTS worth is that I've not had ONE oil leak in the other FIFTEEN Mercedes Benz and AMG automobiles I've owned over 43 years...I would certainly hope that I wouldn't lose an engine in a $126,000 automobile with a hand assembled engine in 4 years wouldn't you? 2006 SL55 AMG w/P30 performance package, 2013 SL63 AMG, 2018 AMG GT C, 2018 E53 AMG and the 2019 E63S AMG...ALL good EXCEPT the E63S WITH THE M177 LS2 version engine!? Houston I think we have a problem with the LS2 engine🤔
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2019 AMG E63S Sedan, Past-16 MB's and AMG's since 1980👍
Yep, NO problem...JUST A $9300.00 oil leak that can FAIL AGAIN after the SAME NEW OIL SEPARATORS are installed that CAUSED the crankcase pressure that made the rear main seal leak the first time...Definition of insanity...you know that one about making the SAME mistake AGAIN and expecting different results. How's that exhaust note in the new battery car😉
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From: Cary, NC
2024 AMG EQE SUV , 2021 E63S Wagon - gone, 2018 E63S Sedan - gone
Yep, NO problem...JUST A $9300.00 oil leak that can FAIL AGAIN after the SAME NEW OIL SEPARATORS are installed that CAUSED the crankcase pressure that made the rear main seal leak the first time...Definition of insanity...you know that one about making the SAME mistake AGAIN and expecting different results. How's that exhaust note in the new battery car😉
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From: South by Southwest
2021 AMG E63s Wagon
Sorry for your Trouble$
Yep, NO problem...JUST A $9300.00 oil leak that can FAIL AGAIN after the SAME NEW OIL SEPARATORS are installed that CAUSED the crankcase pressure that made the rear main seal leak the first time...Definition of insanity...you know that one about making the SAME mistake AGAIN and expecting different results. How's that exhaust note in the new battery car😉
If I dumped my AMG E63s Wagon before its warranty expires there are not many affordable Premium V8s left on the market besides the usual suspects. Times are a changing...reminds me when the Big 3 detuned their V8 Muscle 1973-1974. I learned to drive on my Dad's 1968 Pontiac Catalina V8 Convertible. When the restyled 2025 Cadillac CT5V Blackwing comes to dealer lots will checkout 6-speed manual version but a Cadillac is missing the Panache of an AMG Mercedes-Benz. Glad I still have my LS3 Chevy SS and Ducati motorcycle if I decide to downsize and eliminate the AMG Wagon. My wife will purchase an EV when her Hybrid CRV dies.
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2023 E63S Wagon
I keep following up on my wagon on the status of the prototype catch cans as I am hellbent on not wanting to deal with RMS/AOS failures on this car. 
1. it better not result in any codes;
2. It must look OEM to pass visual inspection (be somewhat hidden); AND
3. IT BETTER WORK!
1. it better not result in any codes;
2. It must look OEM to pass visual inspection (be somewhat hidden); AND
3. IT BETTER WORK!
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'15 E63S,'21 LCI M5
Sorry if this was already discussed in this thread . There are new separator part #'s - whether or not it's a worthwhile revision who knows . Has anyone done the separators themselves , or paid to have them done proactively ? Curious on labor/cost.
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2023 E63S Wagon
its a fairly involved job being sandwiched between the intercoolers and cylinder head. I would be curious as well
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2019 AMG E63S Sedan, Past-16 MB's and AMG's since 1980👍
The Mercedes Benz dealership here in Atlanta REMOVES the engine and transmission...27 LABOR HOURS. I got another quote today in Atlanta from Solo Motorsports...they have completed 4 of these repairs on the M177 LS2 engines so far and confirmed the same required hours and engine removal. They say the rear main seal has been upgraded from the original one but didn't mention the Mehle oil separator change. Labor hour charge is $150/hr. VS $295/hr. at the dealership!!! Don't think anyone will be doing these in their home garage😉
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From: Toronto, Ont, Canda
go fast grocery getter wagon
The Mercedes Benz dealership here in Atlanta REMOVES the engine and transmission...27 LABOR HOURS. I got another quote today in Atlanta from Solo Motorsports...they have completed 4 of these repairs on the M177 LS2 engines so far and confirmed the same required hours and engine removal. They say the rear main seal has been upgraded from the original one but didn't mention the Mehle oil separator change. Labor hour charge is $150/hr. VS $295/hr. at the dealership!!! Don't think anyone will be doing these in their home garage😉
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From: South by Southwest
2021 AMG E63s Wagon
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2023 E63S Wagon
I dont want to worry about RMS/AOS garbage so when this hits its all about going fast all time everytime.
This is pre-AOS routing of catch cans getting developed. Unlike Zac motorsports this one reroutes before the AOS to prevent it from getting overwhelmed and clogging. Zac’s routes after the AOS on a return to intake and by that point the AOS is already riddled w contaminants. God I’m ready to take this out for spring. The wait over winter is rough!
This is pre-AOS routing of catch cans getting developed. Unlike Zac motorsports this one reroutes before the AOS to prevent it from getting overwhelmed and clogging. Zac’s routes after the AOS on a return to intake and by that point the AOS is already riddled w contaminants. God I’m ready to take this out for spring. The wait over winter is rough!
Last edited by graphitegreyamg; Jan 31, 2024 at 04:03 PM.
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From: Cary, NC
2024 AMG EQE SUV , 2021 E63S Wagon - gone, 2018 E63S Sedan - gone
Last edited by HBerman; Feb 1, 2024 at 07:58 AM.
Junior Member
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2019 AMG E63S Sedan, Past-16 MB's and AMG's since 1980👍
Good point... NOT ONE ISSUE with my 2019 E63S AMG until this one...I'd give you my 5 cents worth BUT I'm having to spend it on the RMS/OIL SEPARATORS repair😉😁
