1. A method for increasing the injection duration at the end of a 48 hour deposit formation phase in a direct injection spark ignition engine by at least 10%, wherein the method comprises fueling the direct injection engine with a gasoline fuel composition comprising (a) greater than 50% m/m of gasoline blending components comprising a blend of (i) saturated hydrocarbons comprising C5 paraffins selected from isopentane and n-pentane, and mixtures thereof, wherein the C5 paraffins are present at a level of 10 vol % to 20 vol %, based on the gasoline fuel composition, (ii) aromatic hydrocarbons selected from toluene and xylene, and mixtures thereof, wherein the aromatic hydrocarbons are present at a level of 20 vol % to 40 vol %, based on the gasoline fuel composition, (iii) heavy reformate, (iv) alkylate or alkylate blend and (v) LCC; (b) from 1 vol % to 10 vol % of oxygenated hydrocarbon wherein the oxygenated hydrocarbon is ethanol and (c) from 0.15 vol % to 3 vol % of a diene compound, wherein the 48 hour deposit formation phase is the 48 hour dirty-up phase of the CEC TDG-F-113 test.