Urgent Oil Contamination in Coolant Reservoir

Transmission oil will float on the coolant and make it look dark, murky, and frothy in the coolant reservoir and the radiator. Using some Preston coolant flush solution and running the engine hot 20-30 minutes idling and letting the coolant cool to 150°F, i was able to ... GL 450 2007. It's still drivable. I just got an alert yesterday that coolant is low. Is this an expensive fix ? The only thing that can cause it is a head gasket leak. You will need to have the engine pressure tested to see if the head gaskets are leaking. I inspected my engine to find watery oil on the outside of the air intake and abs brake module (behind the coolant reservoir). A quick check of ... I have an L322 HSE 2008 4.4 V8 i found oil in the coolant reservoir. I've changed the oil coolers and hoses and it happens again 6 months later. One tip, is to double check the oil cooler itself for trueness against a straight edge just to be sure that it is not slightly warped. Not ... The oil cooler is the most likely cause, like most engines, it's combined with the oil filter housing. If your repairer doesn't know this and / ... This is quite a common problem with the 272/273 motors. Replacing the seal alone will not fix the entire problem you have at this point. You ... Engine oil in coolant! ... Yikes. Not a common issue. My suspicion would be head gasket. Did you buy this car from a dealer? ... That's bad!