I have an automatic-transmission temperature gauge in my new vehicle. What is the normal temperature supposed to be?
Transmission temperature can vary, depending on where the flow of fluid is measured. A temperature around 175 degrees Fahrenheit is usually considered normal. Heavy operation, such as towing will increase the temperature. As temperature rises, fluid life decreases. Every 20 degree, above 175 degrees Fahrenheit, can cut fluid life in half. Continued elevated temperature in normal driving can also be a sign of internal transmission problems. Continued elevated temperature often points to internal slippage and eminent transmission failure. For much more on proper transmission service, see our article Transmissions and proper service.
