I was looking at the radiator of a '96 LX 450 (aka Land Cruiser) and noticed that the radiator fluid was brown, kind of like engine oil. I heard its supposed to be red, but is it red like automatic transmission fluid or another shade? Is it possible that the engine oil has gotten into the radiator and mixed with it somehow? ***EDIT*** In this thread are discussions about radiator fluid, temperature gauge, rear main seal, and differential lockers. So look around!