Boat owners and operators are often concerned about the shelf life of their fuel, especially during the off-season when the boat is not in regular use. Gasoline, diesel, and other fuels are essential to power boats, but how long do these fuels last before they go bad?
In general, the duration before fuel goes bad in a boat depends on factors such as the type of fuel, its quality, and how it is stored. Below, we discuss these factors in more detail.
Type of Fuel
Different fuels have varying shelf lives, as well as different requirements for storage and preservation. Generally, gasoline has a shelf life of around six months to a year, while diesel fuel can last up to two years with proper treatment. However, ethanol, an increasingly popular component of gasoline, can cause fuel to break down faster and lead to engine damage.
Quality of Fuel
The quality of fuel also plays a significant role in determining how quickly it will degrade. Fuels with higher octane ratings or refined to higher standards will last longer and perform better. Cheaper fuels, on the other hand, may contain contaminants or impurities that can make them more prone to breakdown.
Storage
Proper storage is critical to the longevity of fuel in a boat. Fuel should always be kept in a cool, dry location, away from direct sunlight, heat sources, and/or water. Additionally, air and moisture can cause fuel to break down, so it’s essential to use tight-fitting caps and seals when storing fuel in containers or tanks.
Treatment
There are also various fuel treatment products available that can help extend the life of fuel. Fuel stabilizers, for instance, work by inhibiting the oxidation process that breaks down fuel. Biocides can also be used to prevent bacteria and other contaminants that can cause fuel to break down quickly.
In summary, the duration before fuel goes bad in a boat varies depending on the type of fuel, its quality, and how it is stored. As a boat owner, it’s essential to keep these factors in mind and take steps to protect your fuel to ensure your boat is always ready to go when you are. Regular maintenance, including testing fuel quality, is also a good practice to minimize any potential issues related to expired fuel.