Oil Contamination in Coolant Reservoirs A Comprehensive Troubleshooting Guide

If you have oil mixed with coolant in the reservoir, you will notice a thick, milky or gravy-like substance that is a tell-tale sign that you have this issue. basically what the TSB says is that "there was an internal casting issue with the block at the cylider walls that would allow the oil and ... You should be able to see the colour of your antifreeze in the reservoir tank when you remove the radiator or coolant reservoir lid. Oil remnants will be seen ... Almost certainly the oil cooler is at fault if it's a td5. The heat exchanger O-rings will have gone hard/warped and be leaking oil into the coolant. E60 Discussion - Oil in coolant reservoir - So after taking my BMW to a local INDY he replaced the oil cooler and oil filter housing did 3 ... I have a 09 Beetle, my mechanic called me with my issue and it was a failed oil cooler. I had oil in the coolant and the car overheated. 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 ... Then flush your coolant and do an oil change. If you suspect you have an issue with your head gasket, do a compression check. Check your hoses ... If oil is leaking into your coolant, the coolant will be overflowing because oil is adding to the coolant. Therfore, your oil should be consumed. 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 ...