IMPROVEMENTS IN FUEL OIL COMPOSITIONS

摘要

A fuel oil composition comprises a major proportion of a fuel oil and minor amounts of: (a) at least one polar nitrogen compound effective as a wax anti-settling additive; and (b) at least one reaction product between a hydrocarbyl-substituted succinic acid or anhydride and hydrazine. A method to improve the detergency properties of a fuel oil whilst avoiding an adverse effect on the cold-flow properties of the fuel oil is also described.