0W20 seems awful light for towing but with vehicles warranties being cancelled for smallest reasons, I’ll stick with the AC Delco for now. Amsoil has a two new oils for the 3.0. Listed as DexosD compatible but not Dexos licensed. 0W20 and 5W30. DP020 and DP530. I’ve always run Mobil 1 in everything since 2001 but the only Dexos D oil I can find is thru my dealer or DMAXStore.com. Amazon and eBay are out for me.