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In the United States and Canada, octane ratings are in AKI, commonly shown as "(R+M)/2". All states require gas pumps to be labeled with the correct octane level and nearly all states do regular testing to make sure gas stations are in compliance. A minimum 82 octane fuel is recommended for most vehicles produced since 1984.
Gasoline marketers agree when they sign on to Top Tier program that all their grades of gasoline meet these standards. [10] However, premium grade gasoline may have yet higher levels of detergent additives. [11] Typically, Top Tier gasoline will contain two to three times the amount of detergent additives currently required by the EPA. [12]
Using gasoline of a higher octane than an engine is designed for cannot increase its power output. Octane became well known in American popular culture in the 1960s, when gasoline companies boasted of "high octane" levels in their gasoline advertisements. The compound adjective "high-octane", meaning powerful or dynamic, is recorded in a ...
If Costco's gas is $0.20 cheaper per gallon than the next most affordable fuel station in your neighborhood, then you're looking at saving $2 per weekly fill-up. If you fill up 50 weeks out of the ...
Buying gas at Costco can save you money, but there's more to know about fueling up at this warehouse club. Check out a few facts that could come as a surprise. 3 Must-Know Facts About Costco Gas ...
Costco's Kirkland Signature Fuel holds the TOP TIER™ designation, meaning it's designed for great performance. You might get better mileage out of Costco gas than fuel that isn't TOP TIER ...
According to the Energy Information Administration (EIA), as of March 2022, factors that affect the price of gasoline in the United States include the price of crude oil per barrel, costs and profits related to refining, distribution, and marketing, and taxes, along with the charge set by refiners for gasoline based on based on octane levels, with higher octane levels—premium grade cost ...
Even worse, that's not the most disappointing thing about getting gas at Costco. Rather, it's the lack of cash back for Executive members. Costco sells two membership tiers. The basic (Gold Star ...