The Ultimate Guide to Oil Contamination in Coolant Reservoirs

Damaged head gasket · Faulty Oil/Coolant Heat Exchanger · Cracks in the cylinder head · Cracks in the engine block. 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 ... 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 ... The coolant reservoir was leaking a brown liquid. I guess this is oil and i have heard that means its most likely a blown head gasket. A blown head gasket allowing oil into the coolant would also allow coolant into the oil, causing a frothy or milky look. 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 ... Coolant can react to oil and make it sludge, which isn't good, and coolant in your lubrication system would be bad. So the next step is to ... Lubricating or Transmission Oil in the Coolant Cause Correction STEP 1 Bulk coolant supply is contaminated Check the bulk coolant supply. Drain the coolant and ... The oil always ends up in the overflow. It floats on the coolant, so it's the first to get pushed out into the expansion tank when the motor warms up. The oil cooler seems to be leaking and it may be clogged since both cooler hoses going in were dry inside and there were no signs of fluid moving through.