My mechanic (who will perform the Valvoline Automatic Transmission Service, full fluid exchange) is only able to use Valvoline Maxlife ATF.
This comes with Valvoline's warranty thing. the Level One – Coverage up to $4,000 USD for United States or up to $4,000 CAD for Canada should any work need to be done on the trans as long as it's done within 80,000km and kept up regularly. (I know it's probably a PITA to actually claim but heh).
Anyways...
Am I Okay just going with Maxlife?
Maxlife works very well in GM 6T & 6L units!