Do not use any other fluids on your Toyota where AC gear oil is required. This fluid is a bit more expensive, but if you run into a fluid change problem, do it right and only use this Toyota WS fluid. My 235,000 mile Tundra transmission was having shift problems. After realizing the transmission pan was leaking, I found it held 2 liters. I replaced the pan gasket, filter and filled the liquid to normal levels. No more problems. Trans works like new. Transmissions are designed to work with aโฆ