The transmission is one of the most important parts of your vehicle. It’s main function is to deliver power to the front or rear wheels. Today’s automatic transmissions are made up important internal mechanical, hydraulic, and electrical systems that work together to ensure your transmission functions properly. Transmission fluid lubricates, cools, and cleans these internal components. It also helps maintain the hydraulic pressure necessary for the transmission to function. Transmissions are designed to operate at high temperatures, but consistent overheating from every day driving conditions can break the transmission fluid down. The additives in the transmission fluid can be depleted over time and should be replaced with new fluid at recommended intervals outlined by the vehicles manufacturer.