An automatic transmission,
transaxle, manual transmission change the engines speed and torque in relation to the speed and torque of the drive wheels. This keeps the engines output matched as close as possible to varying road speeds and loads. The torque converter, connected to the transmission/transaxle input shaft, connects, multiplies and interrupts the flow of engine torque into the transmission.
Under normal driving conditions, your A/T fluid becomes contaminated with microscopic metal particles and worn clutch materials. Over time, the contaminants reach levels that are harmful to the transmission, which results in premature wear and poor shifting performance. A transmission servic, which replaces the used fluid and filter kit, removes these contaminants, helps prolong the life of the transmission.
