Filled up yesterday, just shy of $60 worth of regular at $3.85/gallon. It would break my heart to fill the Elderbeast now. It had two tanks, a 22 gallon with a 19 gallon reserve. It would cost over $150 to fill it from fumes now, if it would be satisfied with unleaded regular, which it probably wouldn't. 'Twas truly a beast and a half.