Gas Price Costco Oakbrook (2024)

FAQs

Is Costco Premium gas 91 or 93? ›

A: Regular and ​p​remium ​gasoline, and ​d​iesel at select locations. Gasoline ​octane can vary by state, but at Costco, it's typically 87 octane for Regular and 91 octane for Premium Gasoline.

Costco Gasoline

Launch the app and tap the Warehouse icon at the bottom of the screen. Tap the pin of the warehouse you want to view gas prices at. You will be taken to the Warehouse details page. View the warehouse's hours and current gas prices.

Plan your fueling around the quieter times, typically during the middle of the week and early in the morning. Additionally, members can consult the Costco app, which sometimes offers real-time updates on gas station wait times.

The fact that gas is cheaper at Costco doesn't mean it's lower in quality. The company offers Kirkland Signature gasoline, which is formulated to improve vehicle performance and fuel economy. Costco says the gas also reduces emissions, making it better for the environment.

In this way, combustion is carried out in a much smoother and more efficient way. This means that premium 93 octane gas has a higher performance. In addition, it is also very likely that fuel consumption will be lower than if we use 87 or 91 octane gasoline.

The octane level of regular Gas is usually 87 in most states. On the other hand, premium gas is usually 91 or 93 octane. If the fuel is more powerful, it can withstand more compression before it explodes. The higher the octane rating, the less likely the detonation will happen at the wrong time.

You'll know you're filling up with the good stuff if you spot a small green sticker on the pump that says “TOP TIER Detergent Gasoline.” As of early 2022, the following stations sold Top Tier gasoline in the U.S.: 76, ARCO, Aloha, Beacon, Breakaway, CITGO, Cenex, Chevron, Conoco, Costco Wholesale, CountryMark, ...

Where does Costco gasoline come from? The gasoline from you local Cosco comes from the same terminal as the rest of your local gas stations. The only difference is that is doesn't get the proprietary additive package added to it that you pay extra for from Shell or Chevron or whatever your local options are.

You must be logged in to Costco.com and have a valid Costco Membership number saved in your online account to view pricing and/or purchase Member Only Items. When viewing product details, you will be prompted to login to your account to display pricing and enable the Add to Cart button.

Costco is listed as a TOP TIER™ gasoline retailer. Find out more at www.toptiergas.com.

What is the cheapest day to get gas? ›

Buy Gas on Monday or Tuesday

Be strategic about the days you fill up at the pump. “For gas, Mondays and Tuesdays tend to be the cheapest days to fill up your tank as demand is lower at the beginning of the week,” Anderson said.

In general, gas prices tend to be lowest at the beginning of the week, on Monday and Tuesday, GasBuddy's lead petroleum analyst Patrick De Haan told Nexstar. As the week goes on, gas prices tend to rise until they reach their most expensive point on the weekend – especially on Friday and Saturday.

“You save approximately 20 cents a gallon at Costco over other local vendors,” says David Schwartz, who together with his wife Susan authored “The Joy of Costco”. “That's something we have seen time and time again across the country.”

The short answer is that unlike pretty much every other retail business that sells gasoline, Costco doesn't care about making money from its gas pumps. In fact, Costco typically sells its gas at a moderate loss. Why would Costco do this? It's not an act of charity.

Premium gas is also often called high-octane gas thanks to its octane rating of 91 to 94. Regular gas typically has an 87 rating, while the 88-90 range is considered midgrade. Premium gas drives performance in specific engines, but the idea that it's more fuel efficient is a myth.

Regular (the lowest octane fuel–generally 87) Midgrade (the middle range octane fuel–generally 89–90) Premium (the highest octane fuel–generally 91–94)

Premium gasoline is generally considered any type of gasoline with an octane level of 91 or greater, with 91 octane and 93 octane being the most common versions of premium gasoline available at gas stations in the United States (93 octane gasoline may be called “ultra” or “super-premium” in some cases).

Costco is listed as a TOP TIER™ gasoline retailer. Find out more at www.toptiergas.com. Kirkland Signature™ Gasoline contains five times the EPA detergent requirement in both regular unleaded and premium grades, and is formulated to clean your engine and help your vehicle run like new.