Muckey radiator csp

Asked by Mar 07, 2016 at 03:33 PM about the 2005 Cadillac STS V8 AWD

Question type: Maintenance & Repair

I have a 97 Cadillac with a Northstar engine with
the muckey radiator cap what could I do ?

1 Answer

269,985

Sounds like oil is mixing with the coolant. Check the engine oil too. The northstar engine are infamous for head gasket issues around 100K miles. Have the engine pressure tested.

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