03 Cts radiator problems!!! Help me please
Just brought the car in April from a dealer! Had no problems until bout a month ago car ran hot due to a busted top radiator hose fixed that then bout a few weeks later the transmission started slipping if the car set still overnight or a couple hours it would rev the rpm to bout 4/5 before going into 1st gear after warming up it was fine! So I changes the transmission sceen today and the problem was fixed so I thought but after driving the car it's running hot again a think oily milky substance is coming out the over flow reservoir? Does anyone know what the problem might be????????