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Actually, the gas can itself can only hold 11 gallons of gas, that's why you always see the gas man putting in two cans worth of gas during a regular pit stop.

Yes, 11 gallons is what the can is suppose to (and designed to) hold, however, there are some very clever people in Nascar who got as much as "11.7 gallons" from a can, neck, an vent included. That coupled with oversized gas lines, vent tubes, etc., consider stronger tube material with thinner wall thickness. every aspect of race(car/truck/etc.) is scrutinized for what ever edge they can get. Mileage is very important in winning, gastanks, cans, lines, are well thought out.

Though at some tracks, NASCAR mandates a smaller fuel cell to spread out the field (like Daytona and Talladega)

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13y ago

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