I know in MN I can fill out a form to get a refund for my state's gas tax, currently .22 per gallon for anything I use off road. Does anyone know if there's a form to fill out for the federal tax as well? I figure as of right now, my off road diesel is running right at $4.30 / gallon. Road diesel just went up to $4.75 here yesterday. Gas is at $3.85, but if I reduce the state's gas tax, now it drops down to $3.63, and if I could get a refund for the federal tax, it would drop down about another .18, which would almost be $1 per gallon cheaper than the off road diesel. If I ran a gas mower at 1/2 gallon more per hour, the rate would be $4.65 per hour at 1.5 gallons per hour, vs $4.30 per hour at 1 gallon for the diesel. Just wondering if anyone can lead me in the direction to get an answer about federal gas tax refunds. Thanks.