autumn walker
Well-Known Member
- Messages
- 707
- Location
- Nova Scotia, Canada
I'm replacing the driver's side inner axle seal tomorrow night and will be changing the front / rear differential fluid while I'm at it (front has been leaking and I might as well keep the fluid changes in sync).
The owners manual states 75W-90 and meeting GM Specification 9986115; however, nothing but the expensive "grape juice" meets that spec. What are you guys running in your differentials? Would a Mobil 1 or Amsoil 75W-90 work the same?
Approximately how much fluid will I need in the front and in the rear differentials? I want to make sure I have enough before I go pulling the truck apart.
The owners manual states 75W-90 and meeting GM Specification 9986115; however, nothing but the expensive "grape juice" meets that spec. What are you guys running in your differentials? Would a Mobil 1 or Amsoil 75W-90 work the same?
Approximately how much fluid will I need in the front and in the rear differentials? I want to make sure I have enough before I go pulling the truck apart.