Ensuring a smooth journey with Prestone’s New Auto Transmission, Power Steering Fluids Despite this, Prestone, a proven and trusted quality brand of Auto Care fluids since 1927, reminds motorists to religiously check their vehicles and go for annual preventive maintenance to avoid the hassle of a car breakdown when they return on the road. According to Prestone Philippines, car owners need to focus on two frequently overlooked fluids—the Automatic Transmission and Power Steering Fluids. Shifting With Ease The Automatic Transmission Fluid (ATF) is an essential fluid that lubricates the bearings and metal parts inside a car’s automatic gearbox. It also keeps them from grinding down as they move.