


85w140, The secret ingredient to get a b13/b14 trans to hold over 400+whp for a hell of a lot longer. Put it this way, I have yet to break a trans using it. Put over 9k miles on the b13 trans using it, 430whp daily, 490whp on 24 lbs, and well over 500whp on 30 lbs of boost on weekends and at the strip. All day long. Twin disk clutch as well. Before that using 3 different 75w90 oils, I went through 3 stacks in 3 months after going to the twin disk clutch.
is there a specific brand of 85w140 you use?