Thread: oil sludge build up
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Old 01-10-2007, 01:30 AM
2000CAYukon 2000CAYukon is offline
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Re: oil sludge build up
What color is the sludge? Does it look milky?

How does the coolant look? You could have a leak in the engine oil cooler or worse a bad head gasket.

A leak down test might be a good idea.

//2000CAYukon
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