Patent ID: 8894726

Claim:
A fuel composition for a fuel injected diesel engine comprising: a major amount of fuel and a minor effective amount of a reaction product of (i) a hydrocarbyl substituted compound containing at least one tertiary amino group wherein the hydrocarbyl substituted compound is selected from the group consisting of C 10 -C 30 -alkyl or alkenyl-substituted amidopropyldimethylamines and C 12 -C 200 -alkyl or alkenyl-substituted succinic-carbonyldimethylamines and (ii) a halogen substituted C 2 -C 8 carboxylic acid, ester, amide, or salt thereof, wherein the reaction product as made is substantially free of non-covalently bonded anion species, and wherein the minor effective amount of reaction product is an amount sufficient to improve engine performance.