Two quarts of Hypoid Gear oil. I recommend a good quality synthetic, such as Red Line. If you choose to use normal Hypoid Gear oil, be sure to get some "Equa-Torque" or similar positraction additive. The synthetic gear oil usually does not require this additive, but if you get chatter or noise when cornering, try a bottle of the additive. Also, take a look to see what the synthetic manufacturer recommends. If you use regualar gear oil i have used in the past i believe it was 85-90
With the girdle 3qts
Use the gasket with a thin coat of rtv
