2007 S550 Base Car
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2007 s550
2007 S550 Base Car
Any body experienced rear engine seal leaks? Mine leaked in 2016 about 50k miles. I had it replaced by my trusted mechanic who has a shop. He is factory trained mechanic. It lasted 7 years. Now leaking again, 72k miles.
I kept the seal the first time replaced. The seal itself appears undamaged. Still supple. This leak seems to be a slow seep mode. I have other cars older than this, more miles, no rear seal leaks.( 2005Toyota Corolla, 2003GMC Envoy, 96 Impala SS). I am thinking that it is just an annoyance issue so ignore it unless it gets worse. The leak is not even showing on the oil dipstick level between oil changes. Any thoughts to share? this is an expensive job. Cost almost $1000.
I kept the seal the first time replaced. The seal itself appears undamaged. Still supple. This leak seems to be a slow seep mode. I have other cars older than this, more miles, no rear seal leaks.( 2005Toyota Corolla, 2003GMC Envoy, 96 Impala SS). I am thinking that it is just an annoyance issue so ignore it unless it gets worse. The leak is not even showing on the oil dipstick level between oil changes. Any thoughts to share? this is an expensive job. Cost almost $1000.
Last edited by Honorio Lim; Mar 24, 2023 at 03:21 AM.
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Joined: May 2019
Posts: 305
Likes: 115
2007 S550
Any body experienced rear engine seal leaks? Mine leaked in 2016 about 50k miles. I had it replaced by my trusted mechanic who has a shop. He is factory trained mechanic. It lasted 7 years. Now leaking again, 72k miles.
I kept the seal the first time replaced. The seal itself appears undamaged. Still supple. This leak seems to be a slow seep mode. I have other cars older than this, more miles, no rear seal leaks.( 2005Toyota Corolla, 2003GMC Envoy, 96 Impala SS). I am thinking that it is just an annoyance issue so ignore it unless it gets worse. The leak is not even showing on the oil dipstick level between oil changes. Any thoughts to share? this is an expensive job. Cost almost $1000.
I kept the seal the first time replaced. The seal itself appears undamaged. Still supple. This leak seems to be a slow seep mode. I have other cars older than this, more miles, no rear seal leaks.( 2005Toyota Corolla, 2003GMC Envoy, 96 Impala SS). I am thinking that it is just an annoyance issue so ignore it unless it gets worse. The leak is not even showing on the oil dipstick level between oil changes. Any thoughts to share? this is an expensive job. Cost almost $1000.
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S500
on my BMW bike rear main seal is a common failure (straight on to the dry clutch) even on a old 2007 model year, heard a lot of experts telling how you must NOT lube the seal - it MUST be fitted dry - didn't believe a word of it - looked it up and indeed IF you lube the lip seal or the crank to help it fit / have an easy start in life - this action causes it to fail !!!!
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Joined: Aug 2014
Posts: 5,375
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S500
who's point did u want more info on
PTFE:
PTFE:
- PTFE seals come with a plastic sleeve/installation tool on the inside bore of the seal. This is to keep the sealing area stretched so the seal can fit over the crankshaft.
- Leave the sleeve in place until the seal is installed.
- Install the seal DRY at the crank sealing surface area; no engine oil is required.
- A light coat of oil may be applied to the Outside of the seal to help with installation.
- Some Fel-Pro PTFE seals may come with a pre-applied lube – leave this in place.
- Once the seal is installed, the PTFE lip of the seal will “relax” and conform to the crankshaft after the installation sleeve is removed.
Last edited by BOTUS; Mar 26, 2023 at 06:14 AM.
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W115, W140, C209, W221, W163, W164, W166, X166
Any body experienced rear engine seal leaks? Mine leaked in 2016 about 50k miles. I had it replaced by my trusted mechanic who has a shop. He is factory trained mechanic. It lasted 7 years. Now leaking again, 72k miles.
I kept the seal the first time replaced. The seal itself appears undamaged. Still supple. This leak seems to be a slow seep mode. I have other cars older than this, more miles, no rear seal leaks.( 2005Toyota Corolla, 2003GMC Envoy, 96 Impala SS). I am thinking that it is just an annoyance issue so ignore it unless it gets worse. The leak is not even showing on the oil dipstick level between oil changes. Any thoughts to share? this is an expensive job. Cost almost $1000.
I kept the seal the first time replaced. The seal itself appears undamaged. Still supple. This leak seems to be a slow seep mode. I have other cars older than this, more miles, no rear seal leaks.( 2005Toyota Corolla, 2003GMC Envoy, 96 Impala SS). I am thinking that it is just an annoyance issue so ignore it unless it gets worse. The leak is not even showing on the oil dipstick level between oil changes. Any thoughts to share? this is an expensive job. Cost almost $1000.
I had to do a rear main seal replacement on my 2011 S550 4Matic when I purchased it (Had 247k km/154k miles). Same on my 2 other Benzes (Different engine - OM642 Diesel). 2014 ML350 Bluetec - leaking rear main seal at 135k km / 84k miles and same with my 2015 GL350 Bluetec - leaking rear main seal at 137k km (85k miles). I'm guessing it's a Benz issue because typically rear main seals on other brands last about 10 years / 200k km / 125k miles.
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