i use to count on around a 1/2 gallon per 1/4-mile run bracket racing in SO CA with both race gas and pump gas with the Duster.
My current E85 bracket car uses around 3 gallons to warm it up doing 3 laps in the morning in the pits and drive it back after 3 1/8 mile pass at Madras, OR
This car is hard to get heat and keep heat in the motor using E85 hence the extensive warming up each morning before racing it
All my other cars got hot a lot quicker on gasoline than this car does, even though it is making a lot more power than the gas motors did