I have an 07 CC V6 with 41k miles on it. I have always changed my own oil every 3,000 miles. I was reading in the manual that came with the truck that if you tow or haul then the automatic transmission fluid should be changed every 30,000 on the premium service. On the regular service checklist it just says check automatic transmission fluid. The manual goes up to 105k miles and every 30k it says change if towing or hauling frequently but never says to change it otherwise. It is a daily driver and rarely hauls anything more than a dirtbike in the back. Anyone know if the automatic transmission fluid should be changed or not?