- Joined
- Jan 5, 2011
- Posts
- 12,187
- Reaction score
- 25,933
- Ram Year
- 2016
- Engine
- hemi 5.7
IMO
If they cant explain why then they have no reasoning.
Redline gear oil is ester based. Its amazing stuff.
If it matters, I can vouch for jimbox experience with changing gears in his wrangler. I have never heard of not running synthetic gear oil in differentials. Doesn't mean you should discount the other posts. I do know Ram trucks come from the factory with sun diff fluid. BTW, what gear ratio are you running and what are you changing to ?