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Oil cap and dipstick covered in creamy sludge, is this breather prob as not losing any water

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Yes, it could be that a plugged up Positive Crankcase Ventilation (PCV) valve or engine crankcase breather (with filter) is the cause allowing moisture to condense in the crankcase. However, if the valve and breather are okay, a cylinder compression test should be done to verify that the cylinder head gasket is not leaking. Regardless, the engine oil should be drained and the engine flushed with clean oil and an appropriate crankcase flush additive. Entrained water in the oil (the creamy sludge) will damage engine bearings quickly.

Posted on Mar 05, 2011

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