Wanting to do a drain & fill on my 2 suv’s. 1. 2002 suburban 1500 4wd 220k : 2. 2006 Buick Rainier 200k AWD. I’ve always used GM Auto track 2 but recently I’ve seen people recommending Dex Vl. What would be best for these 2 machines. I can’t remember the fluid capacity for either T-case, is Amsoil still a safe site to get accurate info ? Thanks