What Is a Transmission Fluid Exchange?

As the name implies, a transmission fluid exchange is done by replacing the old transmission fluid with new fluid. As your vehicle is driven, the transmission fluid begins to breakdown because of friction and heat, which causes the fluid not to work correctly and leads to corrosion of key parts. Transmission fluid plays a key role in your vehicle's drivability because it allows the engine to shift gears, lubricates critical components, prevents rust and corrosion, and much more. The more your transmission has to work when changing gears, the hotter it will be, which can cause premature wear of different parts. Transmission fluid acts as a coolant by pushing heat away and allowing the engine to operate at the right temperature.