We done about 4 tanks in Ryans car when we a few months ago iirc

Depending on how many laps you do when your there depends on how much you get through as that is when the car is being used 110%

I drove to the ring on just about 1 tank of fuel in my nova, however I done 70 miles to a tank on track in the same car. I did nearly 30 laps on that trip too