Joe is correct, the only difference in the red off road fuel is the dye used to catch violators and fine as much as $10,000.00. My argument would be the off road fuel purchased is for the generator, but that wouldn't fly. If you had a separate tank like the reefers do, you could probably get away with it, but for the difference in cost per gallon, it's not worth it.

Back in the old days, we put 2 cans (12 oz) of Dry Gas in each tank and that kept the fuel from gellin. I don't even remember what Dry Gas was made of, but don't see it anymore.