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This fuel cell shows signs of leaking around the gasket securing the plate to the bladder. Maintenance must be performed on these types of parts. If the bladder is leaking, then it is time to replace it. Newer fuels, especially pump gas, contain some amounts of ethanol and can degrade your fuel system parts and seals. Manufacturers are aware of this evolution of fuels and have addressed the problem. New parts are more ethanol resistant than older ones.