Bracket racing and looking for parasitic losses at engine , 727 and general drivetrain:
What are the thinnest gear oils being used safely with spools/ 8.75 rears?
Best trans fluids?
Do we have trans pumps that are highly effieciant ?
I’m in the south ( Texas ) wondering about hp loss on engine oils as 30 years ago I ran 20w50 and don’t believe that’s needed any more.

I’m looking for all the “ little things” that can be done to reduce parasitic losses.

Thanks,
Rusty