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Is Costco Gas Good? (You Should Know)

Costco has some of the cheapest gas around. But is Costco Gas Good? Some people say yes, while others maintain that you get what you pay for. So, what is the truth?

So, I’ve decided to take a closer look and see how it compares to other stations. Spoiler alert: You might want to get yourself down to your nearest station!

What Makes Gas Good Or Bad?

What Makes Gas Good Or Bad?

There are a few things that can make gasoline bad. The first is the octane rating. This is a measure of how much compression the fuel can withstand before detonating. A higher octane rating means less knocking and is, therefore, better for your engine. 

The second thing to consider is the ethanol content. Gasoline can contain up to 10% ethanol, and anything above that is considered E85 fuel. Ethanol is less energy-dense than gasoline, so it will slightly lower your mileage. 

How Much Does Costco Gas Cost?

The petrol offered by the superstore is ridiculously cheap. It is often the cheapest gas you can find. As of writing, the price per gallon was $5.69. This is significantly lower than the $6.39. you would pay at Chevron or the $6.19 you would pay at Shell. So, if you are looking to save some money on gas, Costco is a great option.

So, How Does Costco Gas Compare?

How Does Costco Gas Compare?

Well firstly, price-wise it is excellent as mentioned before. You are definitely going to save some money by filling up there in comparison to Shell or Chevron. 

Although you do need a membership to shop at Costco, which costs at least $60 a year, so you would need to spend quite a bit on gas to make up for that cost. 

Octane and ethanol rating…

In terms of quality, it is a little more mixed. The octane rating is lower than at some other petrol stations at 87, so if you are looking for the best possible fuel for your car, then you might want to look elsewhere. Chevron and Shell both offer fuel with an octane rating of 91. 

Next, ethanol content – Costco’s fuel contains 10% ethanol, which is the standard amount. In comparison, both Shell and Chevron, both have 10% ethanol levels in their gas. So, no real difference here. 

What about Gunk?

What about Gunk?

Gunk is a build-up of deposits in your engine caused by low-quality gasoline. Over time, these deposits can cause your engine to run less efficiently and can even lead to engine damage. 

So, does Costco’s gas cause more gunk than other places?

There is no definitive answer, as it depends on your car and how you drive it. However, if you are looking for a fuel that will minimize the amount of gunk in your engine, then you might want to look elsewhere. 

Cleaning Agents

These detergents are added to petrol to help keep your engine clean. The higher the concentration of cleaning agents, the better the quality of the gas. Costco’s fuel contains five times the cleaning agent requirement, so you can be sure your engine will stay clean. 

So,Is Costco Gas Good?

It depends on what you are looking for. If you are looking for the cheapest gas possible, then it is a great option. However, if you are looking for the best possible quality, then shell or Chevron might be a better choice.

E85 Fuel

E85 Fuel

Costco also offers E85 fuel, which is a blend of gasoline and ethanol. This fuel is less energy-dense than gasoline, so you will get lower mileage when using it. 

Should you use E85 Fuel?

E85 fuel is an excellent alternative if you are looking to reduce your carbon footprint. However, it is important to keep in mind that you will get less mileage per gallon when using it. So, if you are looking to save money on gas, then E85 might not be the greatest choice.

What about Premium Gas?

The superstore also offers premium gas for a few cents more per gallon. Premium fuel has a higher octane rating of 91, which can give your engine a little bit more power. It also does not contain any ethanol, so you will not have to worry about lower gas mileage. 

If you have a high-performance car or frequently tow heavy loads, then premium gas might be a viable choice for you. In comparison to premium fuel supplied by Shell and Chevron, Costco’s premium gas is a few cents cheaper per gallon. 

Should I use Premium Gas?

If you have a car that requires premium gas, then you should use it. However, if your car does not need premium gas, then you probably will not see any benefits from using it. It can increase your mileage and possibly reduce the gunk in your engine, but you are unlikely to notice these benefits, whereas the cost is much more noticeable. 

Costco Customer Experience At Pumps

Costco gas stations are usually very busy, so you can expect to wait in line for a while. However, the experience is generally surprisingly good. The staff is usually friendly and helpful, and the pumps are typically well-maintained. You can also expect the gas station to be clean and orderly.

 You will, however, need to fill up your car by yourself and pay at the pump; there is not an assistant to do so for you. 

The Difference Between Diesel And Gasoline

The Difference Between Diesel And Gasoline

Diesel is a type of fuel that is made from crude oil. It is similar to gasoline, but it has a higher energy density. This means that you will get more power per gallon when using diesel fuel. Diesel engines are also typically more efficient than gasoline engines. 

Should I use Diesel?

Diesel is a smart choice if you are looking for better mileage. However, it is important to keep in mind that diesel engines are, on average, more expensive to maintain than gasoline engines. You also should NEVER put diesel in a gasoline car or vice versa; this can be a very costly mistake. 

Is Costco’s Diesel good?

In comparison to diesel provided by Shell and Chevron, Costco’s diesel is a few cents cheaper per gallon. However, the quality of the fuel is typically the same. So, it might not be worth getting a Costco membership purely for accessing their diesel pumps.

When comparing quality, you can look at cetane levels. Cetane is a measure of how quickly diesel will ignite in an engine. The higher the cetane level, the better the quality of the fuel. Costco’s diesel has a cetane level of 47, which is comparable to Shell and Chevron. 

Tips For Saving Money On Gas

Tips For Saving Money On Gas

With rising fuel costs across the globe, there are a few things you can do to save money on it. One option is to join Costco’s executive membership, which entitles you to 2% cash back on all gas purchases. Another option is to use a gas rewards credit card. These cards typically give you 3% cash back on gas purchases. 

One of the best ways to save money on gas is to keep your car in good condition. This means regularly changing your oil, checking your tires, and keeping your engine tuned up. By doing these things, you can improve your car’s gas mileage by as much as 10%. 

Driving on empty can damage your car!

Lastly, keeping your gas tank filled above 1/4 tank can also help improve your mileage. This is because driving on empty can damage your car through:

  • Clogging the fuel filter is one of the most common ways that driving on empty can damage your car. When the fuel filter gets clogged, it restricts the flow of gas to the engine. This can cause the engine to run less efficiently, and it can eventually lead to engine damage. 
  • Another way that driving on empty can cause problems is by damaging the fuel pump. This is responsible for delivering gas to the engine. When you run out of petrol, the fuel pump can overheat and break. 
  • Finally, driving on empty can also cause engine misfires. This is because the engine needs a certain amount of gas to run properly. When you are on low, the engine cannot get the gas it needs, and this can cause it to misfire. 

Ever Thought Of Working At A Gas Station?

Well, today’s your lucky day! We have a great selection of job opportunities, such as my Sheetz Application, my Chevron Application, or how about my RaceTrac Application, my Loves Application., Speedway Application, and our 76 Gas Station Applications Online, to get you started!

Furthermore, take a look at our Holiday Station Application, our Turkey Hill Application, and our BP Application, as well as our Clark Gas Station Application, our Mobil Application, our Stripes Application, and finally, our Murphy USA Application for 2023.

Are you still in school and looking for your first job? Then our guide on Can A 15 Year Old Work At A Gas Station will come in handy.

Lastly, if you need to fill up, you’ll want to know What Times Does Costco Gas Open Close before heading out!

Is Costco Gas Good? – Final Thoughts?

So, is Costco gas quality any good? Overall, the quality of the retail giants’ gas is comparable to other fuel stations. However, the store does offer some advantages that may make it worth your while to stop there for petrol. 

These advantages include cheaper prices and cash-back rewards for members. Membership can be expensive nonetheless, so if you are not driving a lot or using their facilities and membership deals, it might not be worth it for you just to get their gas.

Good luck filling up at Costco Gas Station!

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About Linda Shepard

Linda is employed by one of the biggest employment agencies in San Francisco and has over 15 years of experience in finding her clients their dream job. She prides herself on being able to match the right person to the right position, which inevitably creates a great working relationship for the employee and the company moving forward.

When she isn't writing articles or working, she enjoys gardening, socializing, and going for long walks on the beach and in nature.

She lives with her boyfriend Carl and their cat, Fluffy.

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