Are Gas from These Stores Bad? Let's Find Out... (2025)

Is Walmart gas bad?

Walmart’s gas is not bad, even though it is not TOP TIER certified. It still meets standards set by the Environmental Protection Agency (EPA). Although Walmart sells gas for prices lower than their competitors, their gas is not bad.

TOP TIER gas has a certain level of detergent added to it, which lowers carbon deposits on fuel injectors. Even though Walmart is not TOP TIER certified, they still provide gasoline that means EPA standards. This gasoline is available at octane levels of regular, premium, and super.

Is Arco gas bad?

No, Arco gas is actually good because it is TOP TIER certified. TOP TIER gas has detergent added to help lower carbon deposits on fuel injectors. The exact detergent blend is different between companies, but companies like Arco that have a minimum amount of detergent can be rated as TOP TIER gas sources. TOP TIER gas also meets all of the standards set by the Environmental Protection Agency (EPA).

Is Costco gas bad?

No. In fact, Costco gas is quite good, as it means TOP TIER certification standards. Companies that qualify for TOP TIER certification add detergent to their gasoline to help lower carbon deposits on fuel injectors. Although the exact blend of detergent varies between companies, companies like Costco must include a certain amount of detergent in order to qualify for TOP TIER status. Costco’s gas also meets all of the standards set by the Environmental Protection Agency (EPA).

Read more: Can You Use Superstore Gift Cards for Gas?

Is Casey’s gas bad?

Yes, Casey’s gas is bad. Many vehicle owners report having issues related to filling their cars with Casey’s gas. Even though all gasoline sold in the United States has to follow standards set by the Environmental Protection Agency (EPA), many vehicle owners have reported issues with the gas at Casey’s.

Casey’s is among a list of companies that do not have TOP TIER certified gasoline, meaning you may be on the hook for costly repairs if bad gas is the cause of your car’s problems.

Is Fastrip gas bad?

It’s unclear whether or not Fastrip’s gas is bad for your car. Although it meets the standards set by the Environmental Protection Agency (EPA), it is not a TOP TIER certified gas company. All gas sold in the US has to follow the standards set by the EPA.

However, some vehicle owners have experienced issues with gasoline provided by companies similar to Fastrip, whose gasoline is not TOP TIER certified gas. To ensure quality gas next time you fill up, look for the TOP TIER sticker at the gas pump.

Is Fred Meyer gas bad?

Fred Meyer gas is not bad, but it may not be as good as TOP TIER certified gasolines. Since all gas sold in the United States has to meet standards set by the Environmental Protection Agency (EPA), you can trust that your gas at Fred Meyer at least meets this minimal standards. However, Fred Meyer’s gas is not TOP TIER certified, meaning it does not have detergent added to it to reduce carbon deposits on fuel injectors.

Is Kroger gas bad?

The quality of gas at Kroger varies by location, since they get their gas from a variety of sources. Their gas is not TOP TIER certified, meaning it is not guaranteed to be high quality. All gas sold in the United States has to meet the standards set by the Environmental Protection Agency (EPA). However, gas at Kroger does not meet TOP TIER certification standards, meaning their gas is not high quality.

To be TOP TIER certified, a company has to have detergent added to their gasoline to help reduce carbon deposits on your car’s fuel injectors.

Is Thorntons gas bad?

Although Thorntons gas meets the standards set by the Environmental Protection Agency (EPA), they are not a high quality gasoline. They do not meet TOP TIER certification requirements. Even though all gas sold in the US has to meet the standards set by the EPA, only TOP TIER certified gas is guaranteed to be high quality. To be TOP TIER certified, a company has to add detergent to their gas. Company’s like AAA recommend that you only use TOP TIER gas in your car.

Is Maverik gas bad?

Maverik gas is not good nor bad. Although it meets the standards set by the Environmental Protection Agency (EPA), it is not TOP TIER certified. All gas in the United States has to meet the standards set by the EPA. However, only TOP TIER certified gas is high quality and recommended by AAA. TOP TIER certified gasolines have detergent added to them to help reduce carbon deposits on fuel injectors. Although Maverik does not have TOP TIER certified gas, their gas meets EPA standards.

Is Quiktrip gas bad?

No. In fact, Quiktrip gas is good, since it is TOP TIER certified. Since all gas in the US has to meet standards set by the Environmental Protection Agency (EPA), all gas stations have a baseline quality. However, brands like Quiktrip meet the higher standards necessary to be TOP TIER certified. To be TOP TIER, gas companies have to add detergent to their gasoline. Since Quiktrip is a TOP TIER gas, it is guaranteed to be good for your car.

Is unleaded gas bad?

Unleaded gas is not bad for your car, unless your car’s manual says you’re required to use premium gas in your car. Unleaded gas is gas that has no lead in it and is typically labeled as “Regular” gas at most gas stations.

Unleaded gas has octane levels of between 85 and 87. If your car’s manual says you need to use premium gas, you need to find gas with octane levels of at least 91. Using gas at lower octane levels can both damage your car and void your car’s warranty.

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Are Gas from These Stores Bad? Let's Find Out... (1)

Eric Walker

Grocery Store QA is owned and operated by Eric Walker. Eric has worked for a number of grocery stores, delivery companies and financial institutions. He had decided to share the knowledge he had gathered through the years of working on the grocery/super market industry, which is why this site came into existence.

Feel free to browse the site, read the posts or find the answers you seek.

Are Gas from These Stores Bad? Let's Find Out... (2025)

FAQs

How do I know if I got bad gas from a gas station? ›

Symptoms of bad gas in your car
  • Failure to start.
  • Hesitant ignition.
  • Stalling.
  • The check engine light comes on.
  • Trouble accelerating.
  • Rough/delayed shifting.
  • Reduced fuel economy.
  • Irregular changes in speed.
Sep 20, 2022

How to check if fuel is bad? ›

You shouldn't have to stick your nose directly into a jerry can or your car's fuel filler to get a whiff of it; you should be able to smell it as soon as you take off the cap. Some describe the smell as sour. If gasoline smells like something other than gasoline, there's a chance it has become too old to use.

Is there actually a gas shortage? ›

There is no gas shortage in the US, it is sometimes a little slower getting to its destination.

Does it matter where you buy gas from? ›

Many gasoline brands use the same suppliers, and a lesser-known name doesn't mean the fuel is of poorer quality. Ultimately, octane rating is more important than perceived gas station gas quality. That means cheaper gasoline at an independent gas station is safe if you're short on cash or running close to empty.

How to know if a gas station has good gas? ›

Many fueling stations selling TOP TIER™ Licensed Brands prominently display the TOP TIER™ logo on the pump, pump handle, canopy or in a station window. The TOP TIER™ logo means you're getting fuel that meets the performance requirements set by engine manufacturers.

How to tell if fuel is contaminated? ›

Signs of Contamination
  1. Frequently clogged filters or filters needing replacement.
  2. Dark or hazy coloration.
  3. Debris floating atop the fuel.
  4. Sludge (can either be on top of the fuel or stuck to the sides of the fuel tank.
  5. Increased exhaust or smoke.
  6. Corrosion of the fuel injectors.
  7. Bad odor from the fuel tank.

Can I mix old gas with new gas? ›

Old and new gas should not be mixed for a variety of reasons, the major ones are; The old gas degrades over time it should not be added because it has already lost it's combustibility. It can cause sputtering. It might fail to fire it up.

How to test fuel quality? ›

The fuel quality testing process typically involves fuel sampling, preparation, and testing using specialized fuel analysis laboratory equipment. Fuel sampling involves collecting a representative sample of the fuel to be tested, using proper sampling procedures and equipment to prevent contamination or other issues.

How long can gas sit in a gas can? ›

In general, pure gas begins to degrade and lose its combustibility as a result of oxidation and evaporation in three to six months, if stored in a sealed and labeled metal or plastic container. Ethanol-gasoline blends have a shorter shelf life of two to three months.

Will we even run out of gas? ›

How long will this last us? Predictions vary and largely depend on consumption rates, but experts estimate that it will be between 90 and 120 years before we run out of natural gas.

Will gas supply run out? ›

Assuming the same annual rate of U.S. dry natural gas production in 2021 of about 34.52 Tcf, the United States has enough dry natural gas to last about 86 years.

Will gas ever go down again? ›

Analysts at GasBuddy and the U.S. Energy Information Administration expect fuel prices to continue to fall throughout 2024, with consumers paying the lowest price per gallon since 2021. According to GasBuddy's annual Fuel Price Outlook, the average cost will drop from $3.51 per gallon in 2023 to $3.38 in 2024.

Which gas brand is the best? ›

The 55 Top Tier fuel brands in the U.S.
  • Aloha.
  • ARCO.
  • Beacon.
  • Belmont Car Wash.
  • CITGO.
  • Cenex.
  • Chevron.
Jan 19, 2024

Do gas stations actually sell different gas? ›

Gas does come from the same place - all gas trucks load up their fuel at the exact same terminals. What makes the difference between brands is the additives that are added to the gasoline.

What gas stations have Top Tier gas? ›

Top Tier Gasoline Worth the Extra Price, Study Shows
See a full list of Top Tier retailers.
ConocoRanger Fuel
Costco/Kirkland Signature GasolineReeders
CountryMarkRutter's
Diamond ShamrockShamrock
17 more rows
Jun 26, 2024

What happens when a gas station sells bad gas? ›

A gas station may be liable for damage to a vehicle if they were aware of an issue and did not take any steps to correct it. For example, if the state was aware that the gas was polluted, contaminated, or had an incorrect octane rating, it may be liable for resulting damage to a vehicle.

How do I know if I have bad gas? ›

Most people recognize the telltale signs of excess gas: feeling like you need to burp or break wind. It can be embarrassing when it happens unexpectedly, but it's usually nothing to worry about. But when excess gas gets trapped in your gut, the feeling can range from mild discomfort to outright pain.

What to do if you pumped bad gas? ›

The most effective method involves diluting the old gas with fresh gasoline. A general rule is to use three parts of new gas to one part of old gas. After adding the fresh gas, mix it well with the old by gently rocking your car back and forth or agitating the storage tank if the gas is stored separately.

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