Patent ID: 8586519
Filing Date: 2013-11-19
Classification: C10M,C10N

Abstract:
1. A multi-grade engine oil formulation comprising: a) a base oil component, said base oil component accounting for at least about 40 wt. % to at most about 80 wt. % of said formulation; b) an additive component comprising a viscosity index improver, said additive component collectively accounting for at most about 35 wt % of said formulation; and c) a diester component, distinct from the additive component, comprising a quantity of at least one vicinal diester species, where at least a majority fraction of the vicinal diester component is bio-derived, and wherein the vicinal diester species has the following structure: wherein R R wherein said at least one diester species accounting for at least about 50 wt of said diester component, and wherein said formulation has a kinematic viscosity of between at least about 3 mm