i had just installed my new head (used one but tested and all that stuff), with new head gaskets. After finishing the work the mechanic turned on the car and let it run for about an hour. guess what? When he oppened the radiator cap he realized that something was wrong, Oil was mixed with water in the radiator, and there was also water in the oil. Really a lot! Even the mechanic dont know what to do now. i know what to do.... change mechanic!!! But i cant because all mechanic are really busy(20 days). So i need to fix this. Do you know what can be wrong that oil was mixing with water(block) an water with oil(radiator) Some one told me yesterday that bmw have something near the oil filter to warm oil in winter and cool it down in summer.
Do you need to rectificate the block each time you remove the head?
Any help will be really apreciated. (one month without my car)
Thanks