Quote:


It's not about "cushioning", it's all about the coefficient of friction (the ratio of the force of friction between two bodies). Type F has a more aggressive COF.



John with this article we are both correct but the fluid's friction modifiers influences the friction material's "lock-up" point. The COF is still in the material used for the clutch friction plates or discs and the lock-up point depends on the fluid characteristics.

BTW I have always used Type F in my 727's

http://www.studebaker-info.org/PDF/44_TN4_8.PDF