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Old 12-29-2002, 09:05 PM
Posts: n/a
Where is my oil going?

Well, I guess I already know the answer to that question and it is on my driveway. The real question I would like answered is where is it coming from? I have noticed that I am very low on oil when I get it changed (every 3 months). I don't think I'm burning large amounts because I don't see any blue smoke. I do find oil spots on my driveway every once in a while but nothing too dramatic. Anyway, I have no signs of a blown head gasket except for being low on oil. Could there be a leak in the head gasket but show no signs of coolant problems? Any advice would be appreciated. And if anybody can pinpoint my problem even given my horrible description and vague details, could it be a DIY job?
Thanks in advance. Oh, I guess I should say this is on my 1988 300e.


88 300e
88 420sel
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Old 12-29-2002, 09:46 PM
Super Moderator
Join Date: Apr 2000
Location: Falls Church, VA
Posts: 5,315
It is probably valve seals, like my car. My 300E is doing a quart every 800 or so, but with good compression and running great.

Leaks, especially from the head gasket are fairly easy to see.
Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe
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Old 12-29-2002, 11:07 PM
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Join Date: Feb 2000
Posts: 2,141
Use the SEARCH facility.

Your 300E has an M103 motor - very prone to both internal consumption and external leakage.

Next to the OVP, this issue has probably been discussed here as much as anything.
Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC

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Old 12-30-2002, 07:47 AM
it leaks, its german
Join Date: Mar 2002
Location: raleigh nc
Posts: 1,111
Odds are its leaking a bit from the headgasket, front upper cover and guides. If it has over 100k on it and your gonna pull the head do guides, otherwise, slam seals in it.

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Old 12-30-2002, 11:24 AM
michael cole's Avatar
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Join Date: Apr 2002
Location: waterloo ontario
Posts: 730
try replacing your valve cover will notice the back of the head has a half moon shaped hole in it where the gasket 300 te was leaking lots of oil here but i couldnt see it.this solved the mystery of wheres the oil gone for me
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