Recently tore apart my engine because I found oil in my radiator. Replaced new head gaskett as well as many others. Bought new hoses for radiator and other cooling hoses. Bought a new radiator even. Worked well for three weeks. Went to get my oil changed and my hose from my heater core had a tare in it and caused anti-freeze to go everywhere. Had all fluids topped off. Replaced the hose last night and ran beautifully. Today I checked my anti-freeze level and I have oil coming back into my radiator. My transmission oil is fine as I know that can cause problems. This is pure 10w-30 Anyone know what this could be causing this problem?

 

I know u replaced the gaskets... did you have the cylinder head checked for cracks? The head have a small crack between the water and oil jacket....

 

probably a warped head.

 

That's my quess,warped head.