The Studebaker US6 heavy cargo truck was developed by the Studebaker Corporation in 1941. The vehicle featured a robust design and excellent payload capacity, with its 6-cylinder Hercules JXD engine producing 94 horsepower, ensuring high off-road capabilities for the Studebaker US6. Approximately 200,000 vehicles of thirteen variations were manufactured in total. The Studebaker US6-U5 version was a versatile fuel tanker equipped with a 750-gallon (2840 liters) tank from Heil. The tank consisted of two tandem-mounted 375-gallon tanks, with racks on the sides for storing 5-gallon fuel cans. Conversion of the vehicles into fuel tankers took place at Heil’s factory in Milwaukee, Wisconsin. Around 1150 of these converted vehicles were produced. They were supplied to US allies, though some speculations suggest that some fuel tankers may have also been used by units of the US Army.