When it comes to using a vehicle that has a low tow rating, or you need to go a longer distance for whatever reason, you may want to invest in a transmission cooler to take some of the stress off the internal parts. As you may or may not know, towing adds strain to your drive train and that goes to build heat which breaks down the fluids andcauses parts to wear faster. So a good cooler system is a must have when you are towing and hauling.