Vehicles with automatic transmissions require transmission fluid. It protects the transmission from running too hot, especially during strenuous conditions such as towing or steep hills.
An automatic transmission is the most complex and one of the most expensive to repair components of your vehicle. It has to do a lot of work and it doesn’t require as many regular services as your engine. This is probably one of the reasons the transmission often gets neglected. Everybody knows that engine oil must be changed regularly for the engine to last, but what about the transmission? An automatic transmission depends on the transmission fluidto do all the work: the transmission fluid transfers the hydraulic pressure to shift the gears, it lubricates all the moving parts and cools down the transmission. The transmission fluid lasts longer than engine oil, but it still deteriorates over time and under load and high temperature. For this reason, keeping your transmission fluid clean and at the proper level is vital. It’s also important to use only the proper type of the transmission fluid.