oil leaks on 2001 Mercedes-Benz CL600

oil is pouring from the back of the engine....the mechanic is asking whether the "cap" over the oil cooler should be replaced with the oil cooler, but he's also concerned with the lack of oil in the coolant, and whether the oil cooler is really bad....he's always found the two mixed when an oil cooler is bad....any helpful suggestions or timesavers would be greatly appreciated...thanks

by in Greenville, RI on September 26, 2009
2 answers
ANSWER by on September 27, 2009
If your mechanic is confused over what to do in this situation, really you need a more highly skilled mechanic. Any time the oil and coolant are mixing, the engine can be destroyed in a heart beat. This is an 'all hands on deck' situation for your vehicle. If there is even a question about the condition of the oil cooler, REPLACE IT and all involved lines, connectors etc. Also do a complete flush of you oil system and cooling system. This is a VERY delicate operation. Flushing the oil may have to be done with an external pump at first , so you don't do damage to the bearings in your engine. Replace the oil filter with EACH flush. Or, you will be replacing a $40,000 engine in no time.
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ANSWER by on June 07, 2010
Sometimes I've seen the oil filter clogged to the point that oil pours out of the engine. I would drain the oil and replace the filter first as was suggested. If that doesn't fix the problem, then move on to the next possible cause.
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