Recently replaced my lower intake manifold gaskets due to oil leaking externally. noticed that oil has now sludged under radiator cap. Obviously I've messed up my install somewhere along the way right? ive seen some threads of people saying oil cant get into the coolant thru the LIM gasket so not sure what to believe. Also once Ive figured the issue out do i have to do anything to the oil contaminants other than flush fluids? take it easy on me im still learning, cheers fellas.