Zinc-free continuously variable transmission fluid
AssigneeInfineum USA L.P.
InventorsRaymond F. Watts, Katherine M. Richard
Life of this patent
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Abstract
A zinc-free lubricating composition for lubricating a continuously variable transmission, the lubricating composition comprising a mixture of a major amount of a lubricating oil and an effective amount of a performance enhancing additive combination comprising: (a) an ashless dispersant; (b) at least one organic phosphite; (c) a calcium detergent; (d) one or more friction modifiers selected from the group consisting of: succinimides and ethoxylated amines; and (e) a primary amide of a long chain carboxylic acid.
Claims18
A zinc-free lubricating composition for lubricating a continuously variable transmission, the lubricating composition comprising a mixture of:
- (1) a major amount of a lubricating oil;
- and
- (2) an effective amount of a performance enhancing additive combination comprising:
- (a) an ashless dispersant;
- (b) at least one organic phosphite having the following structure:
- where R is hydrocarbyl and R1 is hydrocarbyl or hydrogen;
- (c) a calcium detergent;
- (d) one or more friction modifiers selected from the group consisting of:
- (1) succinimides having the structure
- wherein R7 is C6 to C30 alkyl, and z=1 to 10, and
- (2) ethoxylated amines;
- and
- (e) a primary amide of a long chain carboxylic acid.
A performance-enhancing additive composition comprising a mixture of:
- (a) an ashless dispersant;
- (b) at least one organic phosphite having the following structure:
- where R is hydrocarbyl and R1 is hydrocarbyl or hydrogen;
- (c) a calcium detergent;
- (d) one or more friction modifiers selected from the group consisting of:
- (1) succinimides having the structure
- wherein R7 is C6 to C30 alkyl, and z=1 to 10, and
- (2) ethoxylated amines;
- and
- (e) a primary amide of a long chain carboxylic acid.
Dependencies are inferred from the claim text.