I would like to know if there is a possibility of adding a = transmission cooler for an 86 Vanagon. My friend pulls a light trailer with it = and is afraid to burn up the trans. He pulls a light trailer with 2 jet skies. I wouldn't this that this would be to heavy. His 84 = auto self destructed. He was told by his mechanic the you shouldn't pull any = trailers with automatic trailers....is this true??? I would like = to know what to tell him. I looked in the Bentley manual and I can see a = pressure port (used for diagnosis) but where can we put a return?