S600 Crankshaft Rear Oil Seal Leak
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From: Miami, FL
2003 CL 600
Remove the inspection plugs and make sure it's coming from the rear main. These engines leak from valve covers often and it runs down the trans and looks like a rear main.
If you need the rear main seal, the transmission has to come out, so it's a big job but not really that hard if you've done that kind of work before. I did mine in a couple hours one Saturday at work. These cars are actually really easy to R&R the trans on.
If you need the rear main seal, the transmission has to come out, so it's a big job but not really that hard if you've done that kind of work before. I did mine in a couple hours one Saturday at work. These cars are actually really easy to R&R the trans on.
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W221 S600
Thanks for encouragement, couple of hours wow! Have removed small inspection cover and found oil inside, should it be dry? I've looked at back of engine and can't see any leaks from valve covers, will take of air filters covers for a better look, but is probably main rear.
MBWorld Fanatic!
Joined: May 2015
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From: Miami, FL
2003 CL 600
Thanks for encouragement, couple of hours wow! Have removed small inspection cover and found oil inside, should it be dry? I've looked at back of engine and can't see any leaks from valve covers, will take of air filters covers for a better look, but is probably main rear.
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W221 S600
ItalianJoe1 was looking for leak around rear of engine but using a mirror can see fresh oil at front of engine around valve cover and oil filter housing, oil is not dripping from front of car could oil be running from front of engine to bell housing
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Joined: May 2015
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From: Miami, FL
2003 CL 600
Valve cover seals do leak all the time on these engines, so do them first (not that expensive or difficult), and clean it well, and see what else is leaking.
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W221 S600
will i need to remove coil packs to access valve covers, expect best to remove coil packs to clean oil thats probably down there.
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From: Miami, FL
2003 CL 600
Yes, you can't take the valve covers off without removing the coils.
You will usually find some oil around the plugs if the covers have been leaking, and while you're in there, if your plugs are more than 30k miles or so old, I'd suggest changing them. It's only a couple more minutes to do the plugs once the coils are out, and it's easier than doing the coil removal again later.
I did a set of valve covers a little while back on a customer car, if you do it right it can be about a 4 hour job, book time is about twice that. It's not quick or easy, but it's not complicated, just be careful and remove everything that's in the way in order so you know what layers over what when you go back together.
You will usually find some oil around the plugs if the covers have been leaking, and while you're in there, if your plugs are more than 30k miles or so old, I'd suggest changing them. It's only a couple more minutes to do the plugs once the coils are out, and it's easier than doing the coil removal again later.
I did a set of valve covers a little while back on a customer car, if you do it right it can be about a 4 hour job, book time is about twice that. It's not quick or easy, but it's not complicated, just be careful and remove everything that's in the way in order so you know what layers over what when you go back together.
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