Chevron Chemical Company LLC

Chevron Chemical S.a.

Sumanth Addagarla

Glenn E Callis

Jacques Cazin

Frank Ilmain

A low sulfur detergency additive suitable for lubricant composition used in air-cooled two-stroke cycle engines having an unsulfurized alkaline earth alkylsalicylate and optionally a molybdenum compound.

Low sulfur lubricant composition for two-stroke engines

A lubricant composition is disclosed that is suitable for direct fuel injected, crankcase-scavenged two-stroke cycle engines. That lubricant composition has a major amount of at least one oil of lubricating viscosity, a minor amount of a lubricity additive, a polyalkyl amide, an imidazoline, a polyisobutylene, and a functionalized polyisobutylene. The lubricity additive contains glycerol monooleate, an acid aliphatic aromatic amine-phosphate, and sodium sulfonate. The acid aliphatic aromatic amine-phosphate has a phosphorus/oxygen atom ratio of from 4.0:1 to 4.5:1, and at least 1.2 equivalents of acid to 1.0 equivalents of base.

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Richmond, CA, United States of America

Sumanth Addagarla