RaceFuelCal - Calculate your fuel/gas loads for racing! Features: Fuel Calculator - calculate from knowing your average lap time, amount of fuel used per lap and total length of the race (minutes or laps). Endurance fuel calculator Only in the Adsfree version. Use this app on your own risk. Search words. IRacing Racing race Pit stop Forza GT5 Gran Turismo 5 Playstation 3 2.