Lubricating oil compositions

Details Lubricating oil compositions Lubricating oil compositions

2005-02-01

2009-12-01

Caldarola, Glenn (Department: 1797)

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Organic phosphorus compound, wherein the phosphorus is...

C508S460000

Reexamination Certificate

active

07625847

ABSTRACT:
Disclosed are lubricating oil compositions comprising a lubricating base oil, (A) a specific alkali metal or alkaline earth metal salicylate and/or an overbased or basic salt thereof in an amount of 0.005 to 5 percent by mass in terms of metal and (B) a phosphorus-containing anti-wear agent in an amount of 0.005 to 0.2 percent by mass in terms of phosphorus and containing sulfur in an amount of 0.3 percent by mass or less, based on the total mass of the composition, the salicylate being any of salicylates fulfilling specific requirements. The lubricating oil compositions are low sulfur lubricating oils which are extremely excellent in anti-wear properties and long drain properties and suitable for an internal combustion engine.

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