Cheat-Parts high-pressure black grease
From Cheat Parts, this high pressure black grease is best used on ball differential, thrust bearings, universal shafts and Gears, as well as a general lubrication for metal parts. The Black Grease stays in place for longer, even on rotating parts because of its moderate viscosity ensuring long-lasting constant lubrication. Supplied in a 10gram pot.
Source: Cheat Parts [cheat-parts.com]