How Long Does A Full Tank Of Diesel Last?

Hospitals, utilities, diesel fleets, emergency management, telecom/data centers, and backup generator facilities – those who have worked in or managed any of these types of facilities know that the fuels we use today have changed over time. If you’ve been reading the Bell Blog for any length of time, you’ve probably seen allusions to this.

A significant difference between then and now is the storage life of diesel fuel.

How well it withstands the reactions and changes that all fuels go through in the actual world over time.

The US Army claimed in the 1950s that stored diesel fuel might last for 3-5 years (or more).

3-5 years is now out of the question unless stringent fuel preventive maintenance measures are taken.

What is the question at hand?

Despite the fact that we’ve already established that it’s “Not as long as it used to be” is really asking a different question: how long will diesel fuel retain its optimal features before it declines or changes to the point where it performs differently than what you want it to do?

We shouldn’t actually say anything “This is because “degrades” could imply that some fuels decay while others do not.

The truth is that every fuel starts to decay as soon as it is created.

However, the procedure is sluggish, requiring months or even years to see any results. Isn’t it true that we all begin to age the moment we are born?

It Depends (On What?)

In a storage tank, how long does diesel fuel last? The best response, as with many things in life, is It Depends. But what does it depend on? The short answer is that it depends on 1) how much biodiesel is in it (and how much), 2) whether it has or develops a substantial microbiological presence, and 3) whether water is removed on a regular basis.

The third is inextricably tied to the second: all tanks accumulate water, all tanks contain bacteria, and microorganisms thrive on free water and require it to reproduce. You’ll have to do the math. If a microbiological problem arises, the fuel quality might be ruined in a matter of months. Fortunately, modest housekeeping and condition monitoring measures can be used to control (rather than eliminate) this.

Biodiesel content in diesel fuel is important since it boosts the fuel’s ability to hold water while simultaneously increasing the likelihood of microbiological issues (because microbes like to feed on it).

The problem of cracked feedstocks in today’s diesel fuels is also lurking in the background as we analyze these three likely explanations. The distillate fuels processed from crude oil are diesel fuel oils and gasoline (along with other things like natural gas and naphtha). After the distillate is removed, residual fuels (such as heavy fuel oil) are left. Because distillate fuels are more in demand, refineries desire more distillate fuels and less residual fuels (and more profitable).

The refineries were only obtaining 55-60 percent distillate content from each barrel of crude back when you could get 3-5 years of good storage life out of your diesel fuel.

They now have a distillate concentration of 93 percent. However, they can only obtain this through a series of specialized chemical interactions (cracking). They have access to more diesel and gasoline, but these fuels are less stable and reactive.

The Answer?

So, how long do modern diesel fuels last in a storage tank? If it’s a common on-road diesel (with 3-5 percent biodiesel content) and it’s been carefully cared for (water removed monthly, fuel monitored for microorganisms), you should expect to get 18-24 months out of it before it starts to show signs of wear. 12-18 months is not uncommon.

But only if everything goes according to plan. Because so many things go wrong in real life, adding diesel fuel stabilizers to the recommended best practices for storing diesel is always a good idea. That’s on top of the good housekeeping and condition monitoring procedures you should be undertaking on a regular basis as part of your business.

How long does diesel last in a truck?

According to studies, diesel fuel #2 becomes polluted and degrades within 28 days of being stored. Diesel fuel can only be stored for 6 to 12 months on average, while under ideal conditions it can last up to a year. In general, to extend the life of stored diesel fuel quality, it should be:

The term “diesel” is used in NFPA 110 “1.5 to 2 years of storage life.” According to the Standard, “Tanks should be sized so that gasoline is utilized within the storage life of the tank, or provisions should be provided to replace stale fuel with fresh fuel.” A-5-9, NFPA 110

How much is full tank of diesel?

Running a car is costly, especially if you have a negative credit history, are self-employed, or are a new driver and are making monthly auto financing payments.

As a result, we looked into which nations would be the cheapest to fill up a full tank of gas in, using the fuel capacity of the UK’s most popular car, the Ford Fiesta, to determine which countries pay the least for gasoline.

Fuel costs roughly £1.22 per litre in the United Kingdom, which works out to £51.24 for a full tank, but how does this compare to other countries?

How long does a tank of fuel last?

The lifespan of various forms of fuel varies. In most cases, normal gasoline will last three to five months in your gas tank. Diesel fuel can last up to six months longer than gasoline.

The reason for the wide range of figures is because it’s difficult to know how old the gas is. It could have been sitting in the gas station for a month before you arrived to fill up. You also have no idea how long the gas sat at the refinery before being delivered to the gas station.

In general, it’s preferable to be cautious and burn through all of your gas before a few months have elapsed. When gasoline becomes contaminated, it will not burn properly inside the engine. It could also be contaminated with water, which could cause corrosion in the fuel system. Other gasoline-powered items, such as lawnmowers and scooters, are in the same boat.

Should I keep my diesel tank full?

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.

Should I buy a diesel with 200k miles?

Diesel trucks, on the whole, are sold with higher mileage than the average used vehicle. It’s not unusual to come across a used diesel truck for sale with more than 200,000 kilometers on it. Although diesel engines are generally more reliable than gasoline engines, excessive mileage remains an issue.


As previously stated, 20-pound propane tanks are ideal for small chores such as cooking single meals. If you’re grilling on a medium-sized barbecue, one tank of propane will normally last between 18 and 20 hours. Larger barbecues, on the other hand, can consume 20 pounds of propane in as little as 10 hours.

If you use a medium-sized grill on high heat, you’ll need one or two pounds of fuel per meal on average. That works up to about 8 grilling sessions per tank.


The industry standard for measuring the heating efficiency of domestic equipment is the British Thermal Unit, or BTUs. One gallon of propane equals 92,000 BTUs, and the average house furnace uses 100,000 BTUs. The average house furnace consumes about one gallon of propane each hour.

Depending on how often you turn on your furnace, a house furnace might burn anywhere from 500 to 1,200 gallons of propane every year.

Hot Water Heaters

The amount of hot water you use depends on how many bathrooms you have and how many people are in and out of your home. The average residence uses approximately 1.5 gallons of propane per day for conventional hot water heating.

For hot water, the average homeowner will use between 200 and 300 gallons of propane each year.

The average homeowner will consume about 2.5, 500-gallon propane tanks for house heating and cooking each year.

Is 2 year old gasoline 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.