Hello, I just purchased a 99 4Runner with about 94k. It is a 5 speed stick, and I don't believe I burned out the clutch but something definetely got burned out. When the engine is under a load, i.e. a hill or towing I get the raunchy smoke smell, once I looked in my mirror and even saw smoke. Now for the clutch, I have driven sticks before w/o burning them out so I really hope I didn't burn this one but it isn't out of the question. Could this possibly be from the rear differential? i did notice some liquid like residue on the bell housing. thanks so much for your help!