This is why routine coolant testing and oil testing is important. You can expect overheating and eventually severe damage to your engine if you are driving around with a coolant to oil or oil to coolant leak. Blown between coolant and oil: If you are seeing a milky, frothy sludge that looks like a “milk shake” in your engine oil, your head gasket may have blown between an oil gallery and coolant passage.This could compromise crankshaft main bearing lubrication and allow for the piston to suck oil into the cylinder where it will burn off. Hot compression gasses will enter the oil system and pressurizes the crankcase.

Compression leaks to crankcase: If you are seeing a drop in engine oil levels and blue smoke from the exhaust, you’re likely experiencing a head gasket failure between the cylinder and an oil gallery.Running the engine with low coolant can cause the engine to overheat. Coolant leak to outside of engine: If you are seeing your coolant level is consistently low or evidence of coolant on the ground, this may be an indication that the head gasket has blown between a coolant passage and the outside of the engine.Monitory your engine oil levels and keep it topped up. Even though this type of head gasket failure isn’t as immediately severe as others, you should still look into repairs before it gets worse. Oil leak to outside of engine: Oil leaking down the side of your engine likely means the head gasket has blown between an oil gallery and the outside of the engine.

New head gasket leaking coolant