Lubricating oil compositions comprising a polyalphaolefin
AssigneeChevron Oronite Technology B.V.
InventorsRichard Hogendoorn, Kevin Zevenbergen
Life of this patent
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Abstract
Lubricating oil compositions are disclosed. The lubricating oil compositions include one or more base oils (A) containing one or more polyalphaolefin (PAO) base oils derived at least in part from a C12 olefin. The lubricating oil compositions further include from about 65 wt. % to about 85 wt. %, based on the total weight of the lubricating oil composition, of one or more base oils (B) having a kinematic viscosity at 100° C. of from about 3.0 cSt to about 5.5 cSt; and from about 0.1 wt. % to about 10 wt. %, based on the total weight of the lubricating oil composition, of a succinimide dispersant.
Claims14
A lubricating oil composition comprising:
- (a) from about 6 wt. % to about 15 wt. %, based on the total weight of the lubricating oil composition, of one or more base oils (A) comprising one or more polyalphaolefin (PAO) base oils having a kinematic viscosity at 10° C. of from about 8.0 cSt to about 12 cSt;
- (b) from about 65 wt. % to about 85 wt. %, based on the total weight of the lubricating oil composition, of one or more base oils (B) having a kinematic viscosity at 100° C. of from about 3.0 cSt to about 5.5 cSt;
- and
- (c) from about 0.1 wt. % to about 10 wt. %, based on the total weight of the lubricating oil composition, of a succinimide dispersant;
- wherein base oil (A) is derived at least in part from a C12 olefin and further wherein base oil A has a weight average molecular weight of from about 300 g/mol to about 1000 g/mol.
A method for reducing deposits in an internal combustion engine, the method comprising supplying a lubricating oil composition comprising:
- (a) from about 6 wt. % to about 15 wt. %, based on the total weight of the lubricating oil composition, of one or more base oils (A) comprising one or more polyalphaolefin (PAO) base oils having a kinematic viscosity at 100° C. of from about 8.0 cSt to about 12 cSt;
- (b) from about 65 wt. % to about 85 wt. %, based on the total weight of the lubricating oil composition, of one or more base oils (B) having a kinematic viscosity at 100° C. of from about 3.0 cSt to about 5.5 cSt;
- and
- (c) from about 0.1 wt. % to about 10 wt. %, based on the total weight of the lubricating oil composition, of a succinimide dispersant;
- wherein base oil (A) is derived at least in part from a C u olefin and further wherein base oil A has a weight average molecular weight of from about 300 g/mol to about 1000 g/mol.
Dependencies are inferred from the claim text.