| abstract |
A liquid hydrocarbon marine fuel oil includes a marine distillate fuel or a heavy oil or a blend thereof containing an additive combination including:n (A) a polyalkenyl-substituted carboxylic acid or anhydride, and (B) a metal hydrocarbyl-substituted hydroxybenzoate and/or sulfonate detergent, where the mass:mass ratio of (A) to (B) is in the range of 20:1 to 1:20 and the treat rate of the additive combination is in the range of 5 to 10000 ppm by mass. |