Gas and diesel prices have climbed steadily in the last few years, hitting boaters' wallets in a big way. Although there's nothing to be done about the cost, there are a host of things you can do to reduce fuel consumption. In the end you'll gain a little more time on the water and keep a little more green in your wallet.
Proper maintenance is the biggie. For maximum fuel efficiency, you need to change your oil every hundred hours and replace your air filter. Always get an engine tune-up at the start of the boating season. Are your spark plugs clean and working properly? A misfiring or dead spark plug can cost you plenty in terms of lost fuel efficiency. And don't forget the propeller. The right size propeller, with blades clean, in good condition and with proper pitch (angle), makes a world of difference.
The lighter your boat, the less horsepower you need to power it. Less horsepower means less fuel consumption. If you're loaded down with a lot of things you're not going to be using, unload them. And keep the hull clean. Barnacles and assorted vegetation clinging to your boat increase both drag and weight.
Not in a hurry? Then ease back on the throttle. Taking just a little longer to get there will reduce your fuel consumption. You're looking for the sweet spot between the fastest cruising speed and the best possible mileage. You want to find the most efficient acceleration speed and avoid idling whenever possible. Balance the load, which lets you get on plane more quickly. And try boating with the tides, instead of against them. You might even consider taking the shortest route.
Always be sure to use the recommended fuel grade. There's no need to spend money on octane you don't need. Buy it in the morning when it's cooler. You'll get more for your money. If you have a fuel meter or fuel computer, you might consider buying only the gas you'll need for your ride, plus a margin for safety. Excess gas is excess weight. However, if you take this approach, you'll need to use a fuel-drying additive to combat condensation in a partially-full tank.
– Linda Hoff
