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US 2006/0052254 A1Published application
Lubricating oil composition
AssigneeInfineum International Limited
InventorRobert Shaw
Life of this patent
Estimating the term…
Abstract
A low SAPS lubricating oil composition exhibiting excellent piston cleanliness having up to 0.3 wt. % sulfur, up to 0.08 wt. % phosphorus, and a sulfated ash content up to 0.80 wt. % comprising an overbased alkali metal or alkaline earth metal alkyl salicylate detergent having a low soap content.
Claims9
A lubricating oil composition having a sulfur content of up to 0.3 wt. %, a phosphorus content of up to 0.08 wt. %, a sulfated ash content of up to 0.8 wt. % and containing less than 5 millimoles of detergent salicylate soap per kilogram of oil composition which comprises an admixture of:
- (a) a major amount of an oil of lubricating viscosity;
- and
- (b) an overbased alkali metal or alkaline earth metal alkyl salicylate lubricating oil detergent having a salicylate soap content of 20 to 25 wt. %.
Dependencies are inferred from the claim text.