Hey, I'm picking up a 98 Impreza L over the weekend (if all goes well) and already know I need to change the fluid in the rear diff and tranny. I want to get the fluid ordered so that I can have it when I get the car.

First Q: is Redline 75w90NS appropriate? I believe that's what I've read.

Second Q: Is 4 quarts the appropriate amount? I can't look at the manual because it's in the glove box and I don't have the car yet :)

Thanks,

-tim