Rear Main Seal
Thread Starter
Newbie
Joined: Dec 2010
Posts: 11
Likes: 0
From: Chicago, IL
2005 S430
Rear Main Seal
A couple of weeks ago I noticed a couple of drops of oil in the garage. Checked a few days later nothing but basically the drops would appear ever so often so it was hard to figure where it was coming from. Sometimes I could sometimes smell a hint of oil when I got out the car. I wanted to find out where the leak was coming from so I took the car to the stealer to get a diagnosis before taking it to my indy. They informed me that the rear main seal was leaking and needed to be replaced. Since I have an Easy Care Warranty I let them make the repair and paid the $250 deductible. The bill would have been $1053 without the warranty (Parts were only 105.10 and labor $948)
I only have 53K on the clock. Anyone else experienced this repair at or below this mileage.
I only have 53K on the clock. Anyone else experienced this repair at or below this mileage.
Super Member
Joined: Jan 2008
Posts: 508
Likes: 1
From: california high desert
2003 S500, 03 C240, 03 E320, 03 tahoe
seals crankshaft journal to engine case
MBWorld Fanatic!
Joined: Dec 2006
Posts: 4,949
Likes: 39
From: Clifton, NJ
96 and 08 911 turbos
the rear main seal is what seals the end of the crankshaft against the back of the block. On some cars it also seals the upper part of the oil pan to the crank where the flexplate or flywheel bolt up.
As usual, the seal is cheap, removing the tranny to get to it is not.
As usual, the seal is cheap, removing the tranny to get to it is not.
Senior Member
Joined: Nov 2009
Posts: 310
Likes: 0
From: ON, CA
2003 S430
well thats good news !! since i bought my car in 2009 i didnt fix much except trans control module and upper seal and compressor ..and hopefully it stays this way but i so have a feeling the rear main seal is gunna be next..
thanks for explaining
thanks for explaining
Super Member
Joined: Nov 2001
Posts: 985
Likes: 2
Cayenne GTS, Cayenne Turbo
rear main seals *generally* tend to leak if 1) the car doesn't get driven enough or 2) due to age of the seal itself.
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Senior Member
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From: ON, CA
2003 S430
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