Automatic Transmission Flushing
A transmission fluid change usually involves draining the fluid and oil pan and replacing it with fresh fluid. A flush replaces all of the transmission's fluids.
Before a flush procedure, our auto service typically has the driver run a solvent detergent though the transmission. This releases varnishes and dissolves impurities. After this is done, the fluid is then pumped out through its cooler lines while fresh fluid is drawn in.
A flush replaces all of the transmissions fluids, including what is in the torque converter and lines. This can be as much as ten quarts whereas a change may only replace the three to four quarts that is in the pan.
Safety and Time Frame
Transmission fluid flushes are not recommended for vehicles with old, discolored, or burnt fluid. This is because the new fluid will cause transmissions clutches to slip, resulting in immediate failure. Because of this, fluid flushes are best suited for newer vehicles that have gone less than 30,000 miles since their last fluid change.