Side-mounted fuel tanks can be another way to help you save money on fuel during a long trip. The type of fuel tank you get will depend on the make and model of your heavy duty truck. Many companies have GM fuel tanks available as well as tanks for other truck brands. One of the main reasons getting a side-mounted fuel tank installed will help you save money is that you won’t have to stop as often to get gas. Stopping and starting your vehicle, along with having an idling engine, can decrease your gas mileage. The longer you can go without having to refuel, the more money you will save. To find the right side-mounted fuel tank for your truck, contact a company like SouthTowns Specialties, LLC.