10-19-2007, 04:52 PM
Some oils have a certain chemical that will not work with some of the heat-treatment or chemical treatments in some transmissions and differentials. This is A LOT more common than most people think. It will coat the gears with a yellowey substance. This is why you have to be INSANELY careful about what oil you use in transmissions and differentials.
Also with automatics they are very touchy with tranny fluid, any aftermarket transmission fluid that just says auto tranny fluid for every type should be looked at with a very weary eye, yes there is universal auto tranny fluid, but only trannies that take this "universal" auto tranny fluid should use them.
I say stick with factory, especially if your car is stock. Why were you using the royal purple stuff anyway?
Also with automatics they are very touchy with tranny fluid, any aftermarket transmission fluid that just says auto tranny fluid for every type should be looked at with a very weary eye, yes there is universal auto tranny fluid, but only trannies that take this "universal" auto tranny fluid should use them.
I say stick with factory, especially if your car is stock. Why were you using the royal purple stuff anyway?
2020 Ford Raptor
2009 Z06
1986.5 Porsche 928S
2009 Z06
1986.5 Porsche 928S