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I hear that some gear oils have friction modifiers, and that in some applications such oils are not recommended. I need to change the front diff oil (75w/90) in a 2011 Subaru Impreza automatic, in which the front diff is separate from the auto transmission. If I read correct, then a...

I am going to do a front differential fluid change on my base 2011 Subaru Impreza AT. My automatic model has separate compartments for the front diff and the auto transmission. I need help reading this chart that says which viscosity oil to put in the front differential for the auto model. I...

Hello guys, My mother took her 06 Subaru Forester to one of those disgusting quick oil change places, and it appears as if they overfilled the front differential fluid. The fluid was past the top fill mark. My questions are, how bad is this? Is it very urgent to fix? What would happen if I...