How Long Does Diesel Stay Good?

In temperatures of 85 degrees, diesel fuel can last for 6 to 12 months. The fuel will then start to react with the oxygen in the tank. Diesel may become sticky as a result of this interaction. If diesel turns sticky, it can block fuel filters, causing engine problems. The sticky fuel will not burn properly, resulting in a film of soot and carbon on the engine’s inside. One possibility is to apply oxidation-resisting stability treatments.

Degradation of diesel fuel can also be caused by other sources. Fungus can grow in the presence of water in the fuel. Fungi can produce organic chemicals that break down diesel molecules. The gumming process can be accelerated by high temperatures. When metals like zinc and copper come into contact with diesel fuel, they can trigger a chemical reaction. Certain chemicals have been shown to hasten the aging process.

Can diesel fuel go bad?

It’s an age-old question for diesel truck drivers and anyone else who drives a diesel-powered vehicle. ‘Does diesel fuel have a shelf life?’ In actuality, there is no such thing as an expiration date for diesel, but the longer you store it, the worse it performs.

In reality, keeping diesel without properly treating it can cause a slew of problems, not just for the fuel but also for any vehicle into which you chose to put it later. We’ll go over exactly what happens to untreated diesel fuel when it’s stored for a long period, as well as how you may avoid these bad consequences by simply treating the diesel before it’s stored.

Diesel fuel’s performance deteriorates when it sits in storage for extended periods of time. When the fuel reaches the final stages of the process, we call it “diesel fuel gone bad.” It may be too late to save your stored diesel fuel if you notice these things occurring to it. However, there are a few things you can do to extend its life, which we’ll go into later.

  • As a result of being exposed to environmental variables, chain reactions occur: Light, water, and heat are the most prevalent environmental variables that have a negative impact on diesel fuel. If the diesel fuel is stored in a location where any of these things might affect it, the molecules in the fuel will produce chain reactions that will cause the fuel to slowly but steadily change from an oil to a varnish.
  • The gasoline darkens, and the gums get swollen: As a result of the chain reactions that occur between environmental variables and the molecules of diesel fuel, the fuel thickens and darkens, turning into more of a gum or sludge.

This process alters the molecular structure of diesel fuel, and because most modern diesel fuels do not contain the same amount of sulfur as older diesel fuels, bacteria begin to thrive in the fuel, forming biomass. This can result in acids that completely degrade the fuel over time.

  • The sludgy fuel won’t burn properly, resulting in black smoke: This thicker, darker dieselfuel won’t run as smoothly as a diesel fuel that hasn’t been influenced by external factors, resulting in black smoke and engine sputtering, which is never good for your car.
  • Internal vehicle damage due to lubricity: Because this diesel fuel no longer has the lubricity it once did, the acidic nature and thickness of the fuel will begin to negatively affect the fuel pump, diesel injectors, and engine, and you may not be able to start your engine if the problem is severe enough.

You may be wondering if there is any solution that will allow you to keep diesel fuel without it becoming a sludgy mess now that you know what it means when you hear it has gone bad.

The solution is significantly more straightforward than you might have assumed. You can ensure that your stored diesel fuel is safe at all times by using a diesel fuel stabilizer. Although there are numerous brands and formulations to pick from, we recommend Opti-Lube, which is the world’s #1 rated additive that more than doubles the shelf life of diesel fuel.

Despite the fact that diesel fuel does not have a specific expiration date, the performance of stored fuel might be harmed over time if improper storage and additives are not used. If you intend on storing fuel or not driving your truck over the winter, it’s important to use a reliable additive like Opti-Lube and take precautions before it’s too late.

We at Gem State Diesel understand the damage that gummed-up diesel fuel can cause to a vehicle, which is why we’ve decided to offer this knowledge and show you how we maintain our fuel working at its best no matter what. After all, it’s always better to be cautious than sorry, especially when dealing with something as precious and impressive as a diesel engine.

Does diesel go bad after 2 years?

Despite the fact that petrol and diesel are generated from crude oil that has been underground for millions of years, they do not last indefinitely and have surprisingly short shelf lives. According to the RAC, if stored properly, gasoline has a shelf life of roughly six months.

Does diesel go bad after 5 years?

Diesel normally lasts six to twelve months at temperatures over 30 degrees Celsius. When oxygen reacts with the fuel, silt and gum accumulate over time, so make sure there’s as little air in the tank as possible when filling it up. Expired or ‘rotten’ diesel produces less power and can cause soot build-up in engine parts, causing damage to your car, mower, or truck. 5

Diesel, like gasoline, has an expiration date. It’s critical to store diesel fuel in a container that keeps heat, water, and air out, as this can hasten the expiration process. Diesel can last up to twelve months in ideal conditions, but you can extend its life even further by using a diesel fuel stabilizer. 6

What happens to diesel when it sits for a long time?

There are two issues here. First, because diesel fuel is a carbon-based petrochemical, it begins to oxidize as soon as it leaves the refinery, forming the sediments and gums that choke fuel. So, how long will a gallon of diesel fuel last? Without diesel fuel additives, diesel can go bad in as little as 30 days, causing deposits that can harm fuel injectors, fuel lines, and other system components, reducing fuel economy and performance.

Water is a significant issue in diesel fuel for several reasons. One is that new diesel mixes frequently include biodiesel, which has a higher water content by nature. If the water isn’t separated from the fuel, it can make its way into the fuel injectors. Pressures of up to (40,000) PSI are used in newer common rail fuel systems. If even a single droplet of water makes its way to the fuel injector through one of the new high-pressure systems, it can blow the tip-off, which is an expensive repair. This slime, like oxidation, can clog the fuel and cause long-term damage.

You can reduce the amount of water in your tank by keeping it full, which reduces the amount of condensation area in the tank and thus the amount of water. Second, diesel fuel treatments that demulsify or separate water from the fuel are available. A Fuel Water Separator (FWS) filter is found in almost all diesel engines. The performance of the body is improved by demulsification (FWS). All OEM manufacturers recommend demulsifying diesel fuel to ensure that water may be properly removed without causing damage to your engine. For fuel storage tanks, standard good fuel maintenance standards must be followed. These procedures entail the removal of water that has accumulated at the tank’s bottom on a regular basis. Because water is heavier than fuel, it will sink to the bottom, where it will be safer than in your fuel system. To avoid microbial growth, maintenance dosages of a dual phased (works in both water and fuel phases) biocide should be applied twice a year.

Can I use 10 year old diesel fuel?

Diesel fuel can theoretically be used after it has gone bad. Your machines, on the other hand, will go through hell. Gelled diesel clogs filters and gets into engines, causing them to fail. Part rust and injector deposits are caused by the acids that develop in old fuel.

How can you tell if diesel is bad?

Depending on whether it’s bio-diesel or distillate ULSD diesel, you can only expect diesel fuel to be used for 6 to 12 months. If you’re not sure, here are some signs to look out for.

Is 10 year old gas still good?

If you haven’t driven your car in a while, you may be wondering if the gas in the tank is still OK or if it has to be removed and replaced with new gas. Here’s the answer to your question.

Is old gas in the tank bad for your car? The quick answer

In almost all cases, aging gas isn’t a problem. Gas that sits for a long time deteriorates. Gas that has been sitting for a few months, on the other hand, can be redeemed by topping off the tank with new gas. The motor will work properly once the new gas has mixed with the old gas. “The fresh gas will mix with what’s already in your tank,” explains Consumer Reports’ chief mechanic John Ibbotson, “and any fluctuation in the octane will be corrected for automatically by your car’s engine computer.” The change will restore the engine’s regular operation.

What happens when gas gets old?

When gas sits for a long time, it begins to degrade in a number of ways. Gas will lose octane over time. The combustible component of gasoline is octane. The better the air-fuel mixture and combustion in the cylinders, the higher the octane rating (think 87, 89, 93).

As gas ages, it reduces its volatility, or how explosive it is. Engine performance suffers when volatility reduces. As the engine and gas rest, residues and water from gas combustion might build up. None of this is encouraging for engine performance.

How old is too old for gas?

Degradation begins right once, but most gas remains usable for at least a month. Gas that is more than two months old, on the other hand, is generally safe to use with just small performance reductions. Engine knocking, sputtering, and clogged injectors can all be symptoms of gas that has been sitting for more than a year. To avoid engine damage, bad gas can be evacuated from the tank. One thing to bear in mind is that you can’t tell how old the gas is when you first put it in your automobile.

What does old diesel smell like?

When it breaks down, it should smell like turpentine. I would change it if you notice the odor. Algae can also grow in the gasoline.

Does diesel fuel deteriorate with age?

There are a variety of reasons why you might wonder, “How long does gasoline last?” Is it possible that diesel will go off? Perhaps you’ve been away for a while and want to get back into driving an old car, or perhaps you don’t drive much and haven’t filled your tank in a while. It’s crucial to know how long gas may sit in an automobile. So there you have it: everything you need to know about old gasoline and storage.

Is it safe to drive with old fuel?

If you haven’t filled up your tank in six months or fewer, your car, whether diesel or gasoline, is likely to be entirely fine to drive. However, if your tank has been empty for more than six months, it’s usually best to drain it to avoid inflicting any unnecessary damage.

What can go wrong?

Deposits and other contaminants in oxidized gasoline might clog your engine’s inner mechanisms, causing harm. Engine problems may be costly and difficult to repair, as every automobile owner knows. Old diesel, on the other hand, can thicken and stickier with time, clogging the system and resulting in an unexpected repair expenditure.

Can I rejuvenate old fuel?

You might be wondering if you can rejuvenate the tank by topping it up with new fuel if there’s only a little bit of old fuel remaining in it. Usually, the answer is yes. You’ll be able to drive your automobile normally after filling up your tank. However, if you have a full tank of old gasoline or diesel, it cannot be revived, and your tank will need to be drained to avoid engine damage.

Can I store fuel?

These days, there are a lot of gas stations on the roadways. However, if keeping a can of fuel handy provides you peace of mind, there’s no danger in doing so – provided you follow a few simple principles.

To begin, place all fuel in a UN-approved plastic or metal can. Second, keep in mind that gasoline is extremely flammable and should be stored in a safe outbuilding away from any open flames. Finally, according to the Health and Safety Executive, only 30-litres of gasoline can be stored at home at any given moment. If you want to keep more than the suggested amount, you’ll need to inform the Petroleum Enforcement Authority. There are no restrictions on diesel, but apply common sense when it comes to safety, such as keeping it out of the reach of minors.

How long can I store fuel for?

Petrol can survive up to six months if kept in a sealed container at 20 degrees. If the temperature rises, this time is cut in half to just three months. Diesel can be used for six to twelve months or until it gets ‘gummy.’ If it appears to be too sticky, don’t use it.

Contact Carwise Group today for more information if you’re looking for a quality used automobile or low-cost car financing. Carwise Group, based in Harlow and Maidstone, is a respected car dealership that offers a wide selection of vehicles at competitive pricing. Remember that buying from a dealership is typically considered safer than buying from a private seller because all cars are thoroughly inspected and come with all necessary paperwork.