Question about 1995 Pontiac Bonneville

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Have very slow water leak.. can not find where it is leaking at . checked oil and it looks milky

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Milky oil would suggest water has mixed in with it. this added to a slow, unfound water leak points toward a head gasket problem with the coolant escaping from the cooling system, into the oil.
this needs to be sorted out fairly quickly. apart from the obvious problems of a water leak and the risk of overheating, oil with water in it will not lubricate the engine properly and there is a serious risk of engine seizure.
a garage should be able to do a simple test on the oil to discover if it is coolant contaminating the oil.
a pressure test on the cooling system would also confirm where the coolant is being lost.

Posted on Mar 30, 2011

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Posted on Jan 02, 2017

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