Join Date: Oct 2004
Location: Galesburg, Illinois, USA
Hypoid gear sets are a form of bevel gear, but offer improved efficiency and higher ratios over traditional straight bevel gears. Commonly found in axle differentials and used as the ring and pinion gears, hypoid gears are used to transmit power from the driveline to the axle shafts. Because of the spiral design and sliding action of Hypoid gears extreme pressure additives are required." (taken from the Amsoil site) My thinking is that if you're using "gear oil" of 80-90 weight, you shouldn't have any issues. But that is my opinion only, use at your own risk. However, that being said, I also run synthetic 80-90 gear oil in my differential. I change it every season.
Wineberry 1983 Interstate