Hello sifu-sifu,Needs help. I am new.My M20b25 radiator produce "cream" nowaday. Color lighter than peanut buttter.Check and changed the radiator part that cool Auto gear oil. I was leaking.Not sure is because the cream is not flush out properly after the radiator done up or still have other problems, I cream still filling up my radiator reservor.Can any sifu advise me whereas can this cream come from?Can it be from the engine block? my car can still run without problem?Can it be from the hose?