Got this info from Jegs...Any one use this stuff??
I take it you dont have to add the GM Limited-slip additive when using? One more question...How many Oz. fit in a 12 bolt? :confused:

Thanks
Garry

Richmond Synthetic Gear Oils are designed to provide maximum protection and performance under the most demanding conditions. Formulated with high quality, thermally stable, synthetic base oils and exclusive pressure and LIMITED-SLIP ADDITIVES which stay in suspension. This 75W/140 High Performance Gear Lubricant is designed for High Performance Racing Differentials, Posi-traction units and EXCEEDS manufacturer specifications for use in Heavy Duty Car, Light Truck and Commercial Truck.

I use their GL-6 in my 12 bolt without the GM additive.

I always buy 3 qts.

I have not used it. It's probably just Royal Purple or someone else's oil with a Richmond lable on it. I always use Amsoil 75W90 Series 2000 in limited slip differentials.