<VV> Tranny and rear axle oil

[Joel McGregor]

Just to make things more confusing - This is from Royal Purple's site:
Max Gear is recommended for use in truck and automotive front or rear differentials, manual transmissions and lower gear units of marine engines that specify use of an API GL-5 or GL-4 fluid. It is non-corrosive to soft yellow metals (brass, bronze, copper, etc.) and synchronizer safe.
http://www.royalpurpleconsumer.com/products/max-gear/

Joel McGregor