Redline heavy shock proof rear diff?
Has anyone ever used this fluid in their rear ends? A few of my track cars also call for 75W140 in the rear end but everyone seems to gravitate toward the redline fluid. The fluid has film thickness is 75w250 but the actual friction is equal to 75w90. Please don't flame the post as I am new to Jeeps. Just thinking of alternatives or possibly some one has experience running it.