Beware, Your Gas Will Expire Soon
Did you know that gasoline can go bad? Gas, like milk, has an end date. Most gas is good for about 3-6 months. With gas prices at an all time high, and no relief in sight, many are filling up their gas cans to stock up on fuel. Especially if the Federal Government approves the “gas tax Holiday” they’re talking about. That may not be such a good idea though because your gas will expire soon. Read on to find out how to stop your gas from wasting away in your garage and prolong the shelf life.
How Does Gas Go Bad?
Even though the crude oil underground can last for hundreds of millions of years, the gasoline we make from it will degrade over time. This is because the product is highly refined and can contain water, ethanol and other contaminates. Heat, oxygen and humidity are the big three reasons that cause the gas to go bad. Additionally, the type of fuel will effect how long it will last.
One reason for gas to go bad is by oxidation. Which is the chemical reaction of a substance when it’s exposed to oxygen. Another is water contamination. Condensation forms inside the tank, or gas can, and mixes with the fuel inside. Fuels higher in ethanol alcohol may suffer from condensation. Even more due to the fact that ethanol draws in moisture from the air. Heat is another issue as it causes the gas to evaporate.
How Long Can Gas Sit In a Gas Can or Engine?
How fast your gas will expire depends on the type of fuel you’re storing. When properly stored, gasoline can have a shelf life of between 3-12 months. But, there are some fuel stabilizers you can use to extend the fuel life.
Pure Gas, 3-6 Months
Pure, petroleum-based gas can last up to 6 months. This is because it doesn’t absorb water like the other types.
Ethanol Gas, 1-3 Months
Ethanol gas, or what we call “regular” gas, has a shorter life of up to 3 months. This is the gas you see typically sold at gas stations and what the majority of engines run on. Ethanol based gas absorbs the moisture from the air, which contaminates the gas. Oxidation and evaporation play a major role in the short shelf life of ethanol gas.
Diesel, 6-12 Months
Water and heat cause Diesel fuel to degrade over time. When stored properly, diesel can last up to 12 months before it goes bad.
What Happens If You Use Old Gas?
Engine sputtering, knocking, clogged injectors, and blocked gas lines are just a few problems that could occur if you use old gas in your engine. Your engine may also not run as efficiently or smoothly.
You can try mixing old and new gas to use up some of the older gas if it’s near the end of it’s shelf life as stated above. With this in mind, mix one part old gas with one part new gas. But, if you are beyond the recommended shelf life it’s best to dispose of the gas. Search for your nearest government approved disposal facility.
How Can You Extend The Life Of Your Gas?
Luckily, there are fuel stabilizers you can use to extend the life of your gas.
Fuel Life In-Tank Fuel Stabilizers is a fuel stabilization filter. You drop one in the fuel tank and it removes the water and contaminants that allow gas to go bad for up to 2 years. Place them in gas cans, or directly in to the gas tank itself.
Sta-Bil Fuel Stabilizer is an additive that can keep gas fresh for up to 24 months. Mix it in with fresh fuel and keep the gas can 95% full to avoid condensation build up.
Shop For Fuel Supplies
Stocking up on fuel when you can catch the price low can be helpful. Especially for having some on hand to run lawn mowers, generators, and other gas powered devices. You can also look to save money by switching to electric devices. Greenworks is a great brand offering many long lasting battery powered and electric tools. I made the switch last year to a Greenworks electric pressure washer and love how well it cleans.
Post cover Image by bpcraddock from Pixabay
