Back to results
US 5,064,546 AGranted
Lubricating oil composition
AssigneeIdemitsu Kosan Co., Ltd.
InventorMasashi Dasai
Life of this patent
Estimating the term…
Abstract
A lubricating oil composition comprising: (A) a base oil having a naphthene content of at least 30%, an aromatic content of not more than 2%, and a kinematic viscosity at 100.degree. C. of 1.5 to 30 cSt; and (B) 0.01 to 5% by weight based on the total weight of the composition of a friction modifier. This composition is very useful as a lubricating oil for use in an automatic transmission or a continuously variable transmission, or as a lubricating oil for use in parts including a wet clutch or a wet brake of an agricultural tractor, etc.
Claims32
A lubricating oil composition comprising:
- (A) a base oil having a naphthene content of at least 30%, an aromatic content of not more than 2%, and a kinematic viscosity at 100.degree. C. of 1.5 to 30 cSt;
- and
- (B) 0.01 to 5% by weight based on the total weight of the composition of a friction modifier.
Dependencies are inferred from the claim text.