TDG Mafia # 81
Join Date: Jan 2009
Location: Fort Wayne, IN
Thanked 26 Times in 24 Posts
I have understood that the friction modifiers were in place to help keep the clutches and bands from slipping and make a trans more efficient. B&M Trick Shift fluid was one of the first to utilize FM's. That is why alot of racers used their fluid, it shifted more firmly.
I could be wrong as I am going off second hand info passed to me by my father, but when he ( a diesel mechanic of 33yrs) and a GM tech at the local dealer both say NO WAY! I tend to listen.
Just tossin my 0.02, hope it helps,
2001 GMC 2500HD EC/LB, 4X4. A few go fast goodies. 540hp/1107tq Danville Dyno 11/09, Kennedy 40% injectors.
05 IH 9400i with Cummins ISX pulling a lumber bunk trailer, stuck in a swamp somewhere in Indiana.
Proud Veteran Served 6yrs Active Army From Germany, Kuwait and Bosnia to Ft. Hood and Ft. Knox