91 Mercedes 300E with 200,000 miles.There's oil in the coolant but the oil dipstick is clean. It over heats some but not completely. Otherwise drives fine. Is this a blown head? Appreciate any help


Asked by Oct 18, 2015 at 11:30 PM

Question type: Maintenance & Repair

3 Answers


Most likely yes, a block check test will tell the tale. Find a good shop, one that will do the job right and not try to short cut it, or you will be right back in there doing it all over again.

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Tom Harmon

Pressure determines what fluid leaks into what other fluid ~ oil can be over 40lbs pressure but the most you will ever get in a radiator is 15lbs (usually much lower) so you probably will never see coolant in the oil.At 200k miles that head gasket must be as brittle as glass

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Oh! here's the question again! And here's my answer again- get a compression test-

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