Synergistic combinations for use in functional fluid compositions
AssigneeExxon Chemical Patents Inc.
InventorsLewis H. Gaines, William H. Stover, William R. Thompson
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Abstract
The present invention provides functional fluid compositions containing a major portion of oil of lubricating viscosity and a novel and synergistic combination of an acylated nitrogen-containing compound having an oil soluble olefinic substituent averaging in carbon number from 8 to 20 and at least one ashless detergent/dispersant.
Claims4
A fuel lubricant mixture for two-cycle engines which consisting essentially of part of a two-cycle engine oil per 15-250 parts of fuel, the two-cycle engine oil consisting essentially of 50-94.5% by volume of a lubricating base oil having a viscosity of 10-1000 cSt at 40.degree. C., the oil being a member of the group of synthetic ester oils, mineral oils, alkylene oxide polymer oils and silicone oils, 0.5-15 volume % of (a) a first dispersant being the reaction product of a double bond isomerized C.sub.16 -C.sub.20 olefin, an alkenyl mono- or poly-carboxylic acid and a nitrogen containing compound and (b) 5-10 volume % of a second dispersant being a hydrocarbyl succinimide wherein the hydrocarbyl group has 60 to 350 carbon atoms.
Dependencies are inferred from the claim text.