Our 04 Pac and 04 Tahoe were both put on "BG Products" transmission service before the 3 year/36,000 miles were up. Sure glad we did. The Pac with 87xxx and had been serviced each 30xxx miles developed a problem. "BG Products" is going to pay the maximum amount of $2,000 under their warranty for a rebuild of the transmission leaving maybe $500 for out of pocket costs. Figured the truck might need help before the Pac. We have been using synthetics in everything, lawnmowers, generators, that we can. Hope you do the same too. Thanks. *BW*