I just filled up 18.29 gallons with 323 on the tank....= 17.66. I have my 20'' chrome (noted becuase of the weight chrome holds) with 265/55 tires. I have now toned down the acetone to about every third tank. The acetone has no effects on seals. This was proven in my thread. It acts as many things, a cleaner and a liquid that burns at a more dense and slower volume.