Abstract: A petroleum collector system is provided for reducing the amount of petroleum product that is dispensed onto the ground when the fuel filter cartridge of the filter assembly is replaced. The petroleum collector system includes a novel petroleum collector pan adaptable to the riser pipes of a conventional petroleum dispenser. The collector pan is configured to adapt around the riser pipes and is further configured to enhance the draining of petroleum product from the collector pan by locating drain means at a location that enhances draining of fluid. The collector pan is interchangeable for single, dual or triple riser type petroleum dispensers. A drain system is provided which delivers the collected petroleum product from the collector pan to an approved petroleum receptacle.