Patent ID: 7759294

Claim:
A wind turbine gear additive concentrate, comprising: a) about 20 to about 60 wt. % of an extreme pressure compound comprising a sulfur-containing compound; b) load carrying capacity enhancing combination comprising (i) about 10 to about 30 wt. % of a hydrocarbylamine compound selected from the group consisting of N-oleyl-trimethylene diamine, N-tallow-trimethylene diamine, N-coco-trimethylene diamine, and combinations thereof, and (ii) about 10 to about 30 wt. % of an alkylphosphoro(mono)thioate compound represented by the formula: where each of R 1 , R 2 , and R 3 is, independently, an unsubstituted alkyl group or a hydrogen atom, and where at least one of R 1 , R 2 , and R 3 is an unsubstituted alkyl group, and where each of X 1 , X 2 , and X 3 represents an oxygen atom; c) about 10 to about 30 wt. % of a long chain alkyl phosphonate friction modifying compound represented by the formula: wherein R a is an alkyl group having from 12 to 18 carbon atoms and R b and R c each independently comprise from about 1 to about 4 carbon atoms; and d) a diluent oil, wherein any of compounds a), b)(i), b)(ii), and c) can be the same or different compounds.