InStant Fill

Make refueling quicker and cleaner than ever. A trap door mechanism accommodates the gas nozzle, eliminating the need to remove and replace the cap. Simply insert the nozzle fully and squeeze the trigger. Never touch a gas cap again.
Four different models fit over 80% of the cars on the road in North America. InStant Fill meets onboard diagnostic (OBD) emission specifications, and will not trigger "check engine" light on late model vehicles.

Note: Not recommended for use in areas where vapor recovery nozzles are used.