Oil Contamination in Water Coolants Unlocking the Secrets of Prevention

Run the engine from cold to hot with the coolant cap off. Watch for bubbles coming up in the tank. If any bubbles you have a blown head gasket. Engine oil and engine coolant or antifreeze are not compatible fluids, and they should always be separate. Engine oil is diluted by coolant and its lubricative ... GL 450 2007. It's still drivable. I just got an alert yesterday that coolant is low. Is this an expensive fix ? To get oil in the coolant, the leak has to be where the oil pressure is higher than the cooling system. This is almost never the head gasket. My ... Hose / tap water is fine. Distilled is recommended only because it is convenient and reliable, more convenient than an analysis of tap water. Seller reports it started putting oil in the coolant several weeks ago and overheating. Seller pulled heads but did not see any signs of head gasket failure. If is oil cooler it's easy to change and after you need to clean your water cooling system,after couple good washes(means 10+ ,drain water add ... For coolant to be getting into the oil I'd say you've got a bad oil seal #8 on the oil pump/water pump shaft. 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 ... It seems that one of the aluminum heads developed a pinhole leak in one of the STEEL freeze plugs, which then leaked water into the crankcase ...