So I’m having issues with oil and coolant mixture in my radiator and oil pan.

I don’t think I have a bad head gasket. Car currently sitting at 190k miles. I did a compression check and got 180+psi all across. Then did a compression holding for the radiator. Pump it to 1.5 bar psi and it held for 15-20min before I let air out.

I even did the take the radiator cap off. Top it off with coolant. Start the car to see if anything shot out but nothing for that as well. Car started up fine with no issues and no coolant was shooting out.

car is auto if that matters and car don’t have any CEL on.

any idea where else to check to see why it’s mixing. I hoping it don’t have a crack block or head. Car had no issues prior this happened. But previous owner did put in some new ignition coil and spark plugs from my knowledge.

 

I don't really know where else they would mix the fit doesn't have an oil cooler. Maybe the previous owner put the wrong thing in the wrong place but that wouldn't explain why its mixed in both areas. Are you loosing coolant and gaining oil or are you loosing oil and gaining coolant?

Speedkar did a teardown if you want to look for ideas