My transmission was acting up but showed a definite improvement when I changed from "Castrol and Valvoline plus 3 back to Mopar 7176. I did the machine flush when I got the truck and put in Valvoline... . burned it up in 5000 miles, then did it again w/band adjustments, put in Castrol..... burned it up quick, Did it again w/ Mopar plus 3 7176, noooo problems @ 10,000 miles... still pretty n pink and towin' in the mountains. 91,000 miles on truck