Does anyone know what the "active" ingredient(s) is in products like: Amalgamated, Power Service, Stanadyne, etc. ? Is it "petroleum distillates", toluene, acetone, another solvent? The ratio advised in the linked article for a diesel is 2 oz acetone per 10 gal fuel. Power Service would compare at 2 oz PS per ~6 gal fuel (96 oz container "treats" 300 gal diesel fuel).