My 1993 190 is leaking oil into the coolant. Any suggestions? - Mercedes-Benz Forum

 
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post #1 of 8 (permalink) Old 11-24-2008, 04:22 PM Thread Starter
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My 1993 190 is leaking oil into the coolant. Any suggestions?

Hi, Everybody, I'm new to this forum. I just recently Purchased a 1993 190E, 4 cylinder. It looks great inside and out, there's about 107K on it. The oil dip stick looks clean, but when I looked into the Coolant resivoire there is an awful looking mess that looks like a carmel milkshake. It's thick and greasy. It's coming out of the overflow hose that runs from the resivore. I took it to a local mechanic, he flushed out the radiator real well but it's gunking up again. The car runs smooth and hasn't overheated. Have any of you experienced this? Do you have any suggestions? I would truly appreciate any help.
Thanks very much in advance,
Patty
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post #2 of 8 (permalink) Old 11-24-2008, 04:32 PM
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That sounds odd. Did that mechanic replace what you had with MB coolant, using the correct ratio with distilled water? BTW, Zerex G05 is also compatible with a lot of MB systems.

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post #3 of 8 (permalink) Old 11-24-2008, 05:30 PM
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Unless you're terribly unlucky, you have a blown headgasket. The gasket failure is allowing the pressurized oil from the cylinder bores which is pressurized, to mix into the cooling jackets of the block which are under less pressure.

Change the gasket, flush the coolant and oil, you'll be good for the next 100K miles.

Oh, if you are terribly unlucky, the cause will be a warped aluminum head, possibly due to the previous owner overheating the engine, but that's extremely rare compared to gasket failure.
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post #4 of 8 (permalink) Old 11-25-2008, 09:54 AM Thread Starter
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Bad head gasket

Thanks so much for your response, from other things I've read regarding the oil in the coolant, this makes the most sense. I'm taking it to the mechanic today and having him change the gasket and flush the cooling system and oil.
Thanks again,
Patty

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Originally Posted by MTI View Post
Unless you're terribly unlucky, you have a blown headgasket. The gasket failure is allowing the pressurized oil from the cylinder bores which is pressurized, to mix into the cooling jackets of the block which are under less pressure.

Change the gasket, flush the coolant and oil, you'll be good for the next 100K miles.

Oh, if you are terribly unlucky, the cause will be a warped aluminum head, possibly due to the previous owner overheating the engine, but that's extremely rare compared to gasket failure.
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post #5 of 8 (permalink) Old 11-25-2008, 01:12 PM
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I think I'd take it to another mechanic, and it would seem mechanicing 101 to be able to diagnose this as a headgasket. You're due a refund on the worthless service yours provided earlier.

Kent Christensen
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post #6 of 8 (permalink) Old 11-25-2008, 04:27 PM
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Originally Posted by lkchris View Post
I think I'd take it to another mechanic, and it would seem mechanicing 101 to be able to diagnose this as a headgasket. You're due a refund on the worthless service yours provided earlier.
+1 and get ready for some sticker shock when he (the new mechanic) tells you how much that HG is going to run you.
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post #7 of 8 (permalink) Old 11-25-2008, 04:40 PM
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The M102 four headgasket isn't as big a job as it is on the M103 six since the radiator can remain in place. It can also be done without removing the intake manifold, but typically the exhaust manifold has to come off.
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post #8 of 8 (permalink) Old 11-25-2008, 05:58 PM
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If you do get the headgasket done, have the valve seals checked. They tend to be pretty worn by 100K.
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