Oil in Water Coolant A Comprehensive Guide to Detection and Resolution

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! A blown head gasket allowing oil into the coolant would also allow coolant into the oil, causing a frothy or milky look. If the seals or cooler go bad, oil can mix with coolant. If the technician is right, it supports what the dealer found and recommended. Attached ... You are correct, the two places pressurized oil could enter coolant is the turbo and oil cooler. Typically it's an oil cooler failure. If the ... Engine coolers use fluid, which can be either coolant or water, to maintain the optimum temperature of the engine. Regardless of the fluid you are using, its ... Because, that's the only part of the car where the oil and coolant can easily intermix if there's a failure, that can easily be replaced. Any ... Hose / tap water is fine. Distilled is recommended only because it is convenient and reliable, more convenient than an analysis of tap water. A bit of oil in the coolant does aid the water seal on the pump but a lot is a problem. If you have antifreeze in the coolant it will breakdown ... A mechanic told me that it could only be from a leaking head gasket. I'd like to rule out the possibilities that it could be oil leaking into ... Blown head gasket\cracked head if you're not getting a CEL with a miss. Oil and coolant only combine into that nice brown goo under high ...