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What causes coolant in oil of a series 60 Detroit?

Answer:

You either have a head gasket leaking,or a cylinder liner leaking.I can't remember if the series 60 has a gear driven water pump,I think it does, if it is gear driven it can leak through the water pump as well,( through the front cover).If it is not the water pump the best thing to do is to drop the oil pan and pressure test the cooling system.You will be able to see where it is coming from.If you are not positive where it is coming you should have the head pressure tested in case it is cracked.

First answer by Jimmyhollywood. Last edit by Jimmyhollywood. Contributor trust: 20 [recommend contributor ]. Question popularity: 3 [recommend question].

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