how fast do boats use fuel?
<answer> Boats use 130 gallons fuel per month. <context> So, just in fuel 25 gallons of 87 in the truck 40 gallons of 93 in the boat twice a month, that's about 130 gallons per month. At todays prices, that's over $300 per month. Motor will actually do pretty good if I keep the rpm down to about 4,500 (boat speed approx 45 mph).