coolant in oil on 1999 Chevrolet Silverado 1500

can this be caused by an intake leak.

by in Holly, MI on February 07, 2009
2 answers
ANSWER by on February 08, 2009
Yes, a leaking intake manifold gasket can cause coolant to leak in to the crankcase and mix with the oil on the 5.0L and 5.7L V8 engines.
ANSWER by on June 19, 2010
If it is a 5.3 liter it can also be caused by a cracked head. From 99-06 in the 5.3 liter engines GM outsourced the heads to a company called Castech. These engines had a casting flaw which was known for cracks and or blown head gasket.
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