What causes oil to get into the antifreeze?
What causes oil to get into the antifreeze? A blown head gasket is a common cause of oil mixing with coolant. This thin sheet of metal sits between the engine block and cylinder head to create an air-tight and liquid-tight seal. In some cases, coolant will enter the oil. In others, oil will enter the coolant. How to tell if coolant is mixed with engine oil? 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. You will want to clean...