Unveiling the Secrets of Oil in Water Coolant Causes, Impacts, and Solutions

Since oil pressure is higher then cooler pressure, the slightest leak in the oil cooler will enter the coolant. Since oil floats on top of water ... 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! The water does not have to be moving from the jacket to the cylinder chamber for it to be a head gasket. The coolant can be moving through ... Fill it up in the radiator and run the car for a few days. Then drain the coolant. Fill with just distilled water. Run for another few days. If there is coolant in the oil, you will find it when you pull the drain plug. Oil floats on top of water, so the water will collect at the ... Oil in the coolant could just be a bad oil cooler. I had that a while back and a new cooler and gasket solved it. Give that a go before you ... 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 ... I had noticed oil sludge contamination inside the coolant overflow tank and brought it up to my dealer at 92,000k miles. The diagnosis was that ... A blown head gasket allowing oil into the coolant would also allow coolant into the oil, causing a frothy or milky look. This happens because the o ring seals on the water pump have gone bad and turned hard as a rock and because of the seals can no longer separate ...