Demand drive fluid

Anyone using anything besides the demand drive in the front diff on their scrambler 1000 or 850? I know mobil 1 Synthetic atf is an alternative but I’d like to know people’s results in their Scramblers. The dealership said that was the only one they’d recommend sticking with oem fluid since a few machines came in with problems when they tried something else. Scrambler’s only please that’s why i posted in this specific forum.