I'm using the traditional mason jar set up. I have 12.86 to 13 volts going in. I have 2 amps coming out. The mixture is distilled water with 1/2 teaspoon baking soda. I have used approximatly 1 inch of water in 88 miles of driving with no substantial milage gains. The car is a 94 honda accord 2.2L. What should be the rate of evaporation? Just wondering whats going on?