2) TEN WAYS TO PROLONG THE LIFE OF YOUR TRANSMISSION
3.    Install an external cooler in high stress conditions. Towing a trailer, hauling heavy loads, or being stuck in traffic often creates excessive transmission heat. An external transmission cooler will help to bring the temperature down to normal operating level adding significantly to the life of the transmission.
4.   Change transmission fluid more often in high stress conditions. Transmission fluid cools, cleans, and lubricates the internal transmission parts while providing the hydraulic pressure to make all of the components work together. When the fluid loses its ability to perform those tasks efficiently trouble can’t be far away. Any of the conditions in items 2 & 3 above will shorten the effective life of transmission fluid. In those cases, change the fluid a minimum of twice a year (unless otherwise specified in the owners manual).