Looked in my coolant reservoir today and it had a dark milky substance kind of like oil. Drained oil pan but no coolant in the oil. had a radiator flush done lots of gunks pulled out when a flush was done less than 6 months ago. Dexcool has been taken out of the engine since i bought it a year or so ago. Havent yet checked to see if its trans fluid. possibly an lim gasket they were supposedly replaced by the previous owner anyway the car has 140xxx mi and its a 2004 gtp. it has a hai beldan wires and a dp highflo cat which i hate bc it throws a code. i also think the cat is fouling out my plugs. Its in need of a tune but definately want to address on what the problem possibly could be any help is appreciated
