playing kill by
AO Gold Member
Join Date: Feb 2005
County: Down in the Park
ATF is not unive'rsal, you need the correct specified friction modifiers. Whatever the manufacturer specifies, but no brand preference.
Manual gearboxes is something different however, as are differentials and transfer cases.
I did the calculations for my own car, to determine the correct viscosity range to limit wear and temperature. alfafiat specify a 75W, but I've found a 110W is what's needed with my power output. Using a75W will reduce the additive levels quickly, and in the end will cause failure. If driven spiritedly the end will come sooner than if deiven like you're supposed to on the public road. Remember how the differentials in the Busso V6 cars failed? same cause, too thin oil depleting the additives, pitting, welding, carnage....
the 3.2 JTS might be different, you need to know the ratios to determine the correct viscosity. Is the final reduction in the automatic gearbox, or part of the transfer case (not lubricated by ATF)?