| abstract |
A diesel fuel composition comprises a major amount of a diesel fuel and a minor amount of the reaction product between a hydrocarbyl-substituted succinic acid or anhydride and hydrazine. At least 25%, preferably at least 50%, most preferably at least 80% by weight of the reaction product has a molecular weight which is more than 2 times, preferably more than 2.5 times the average molecular weight of the hydrocarbyl group of the hydrocarbyl-substituted succinic acid or anhydride. |