There are many fluids in your vehicle that keep the machinery lubricated, cooled, and working smoothly, and the transmission fluid in your car is one of the fluids you may need to replace on occasion. Just like the oil in your engine, the fluid in your transmission can break down and become ineffective over time, which means a transmission service is a good idea. If you drive in hectic traffic where you’re stopping and starting all the time on your commute, you might need to think about getting a transmission service a little sooner than your driver’s manual may indicate. Activities like hauling heavy loads or towing a trailer can accelerate the aging of your transmission fluid, so regular checkups are important for keeping your transmission in good condition.