A cylinder head gasket didn't start leaking and put coolant on the oil cap without the engine running. If you're seeing a cream-colored glop, that is most likely moisture that condensed on the cap. An engine needs a good 20 to 30 mile run at highway speeds about once per week to get warm enough to vaporize that condensation so it can be drawn out by the PCV system. If there's no other symptoms, you most likely have nothing to worry about.
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Saturday, May 2nd, 2015 AT 11:59 PM