Abstract: A fuel-additive dispensing bottle used to dispense a liquid fuel additive into a capless fuel-tank system having a self-sealing mechanism triggered by tabs, the bottle having: a first neck having a circumference, an exterior surface, and an outside diameter between approximately 0.750 inches to approximately 1.

Abstract: A fuel-additive dispensing bottle used to dispense a liquid fuel additive into a capless fuel-tank system having a self-sealing mechanism triggered by tabs, the bottle having: a first neck having a circumference, an exterior surface, and an outside diameter between approximately 0.750 inches to approximately 1.19 inches; a first lip having a circumference, the first lip connected to a first distal end of the first neck, the first lip defining screw-cap threading configured for use with a capless fuel-tank system having a self-sealing mechanism triggered by tabs, wherein sections of the screw-cap threading are disrupted with a plurality of substantially planar thread disruptions, the plurality of substantially planar thread disruptions being positioned at regular intervals on the threading; the first neck and first lip configured for insertion into a capless fuel system having a self-sealing mechanism triggered by tabs.

Abstract: A metal plunger tip has a forward generally cylindrical section having a leading relatively flat forward end and enlarging at its rearward end to a first land. A middle generally circular threaded section spans between the first land and a second generally larger land at its rearward section. A rearward generally cylindrical section of larger diameter spans between the second land a its rear surface that terminates with a section for attachment to an externally threaded push rod. There is an interior cooling cavity in the plunger tip terminating with a rear internally threaded section for mating with an externally threaded push rod. The metal plunger tip can be made from beryllium copper. The metal plunger tip may have a leading chamfered edge. A metal wear ring can be screwed onto the metal plunger tip.