Litespeed says grease is plenty adequate for threaded fittings for it's Ti frames but many of us use either anti-seize (get it at an auto parts store at 10% of the price of the same stuff from a bike dealer) or teflon plumbers tape on bottom bracket threads.

BTW, a 10 mm tube of Loctite will last most bike mechanics for years. You only use a couple of drops at a time.