This is an RC specialty grease with a gross name! It was designed specifically for the E-Maxx tranny and RC diff ring and pinions. It has Teflon, is waterproof and stays in place even at 30,000 rpms. I use it in my BL Maxx tranny and on my Savage diffs and it works better than anything I have tried. It stays in place and does not get flung off even after multiple runs. I can crack the case after a run and the gears are still slick. It works better than Associated black grease and all the auto parts store lithium and moly greases I have tried. The guy only sells it on eBay, but for about 5 or 6 bucks a tube including shipping, it is well worth it.