Do you check the transmission fluid while the engine is running?
Do you check the transmission fluid while the engine is running? Transmission fluid however is best checked when your vehicle is running. The reason for this is that transmission fluid, like any fluid expands when it's warm and contracts when it's cold. You'll get a better reading of how your transmission fluid levels are in your vehicle if you check it when it's running warm. When do you check the transmission fluid level? Since the engine is barely warm at this point, you want the level to be somewhere in the “Cold” range. To get an accurate transmission fluid level...