Not all brands have these additives, so don’t assume that it will be better quality than regular gas just because you see a premium price tag on it.
The premium gas has an octane rating of 93 and the super has an octane rating of 97.īut what is the significance behind the octane numbers? The higher numbers indicate that they have additional additives that can help with engine performance, fuel economy, and emission control. The higher the octane number, the more resistant to knock and better quality it is-and vice versa. Octane is a measure of how well the fuel ignites under pressure. Top Tier gas aims to ensure that consumers get the best products available at their local gas station.Īll major retail locations meet the standards of Top Tier gas (and most already offer it), but if you want to be sure, check out your location’s website or call them to see if they carry this particular type of fuel. While there’s no legal definition for the term “Top Tier”, it has become shorthand for high-quality gas that’s more efficient, cost-effective, and environmentally friendly than other fuels.
All gas stations that sell Top Tier gas must meet specific requirements. The EPA also put a few stipulations on the Top Tier program. It recognizes companies that meet these standards. The Top Tier Gas Program is a voluntary program that encourages gas stations to sell cleaner, more efficient fuel. The idea behind this program was simple: it would classify gas stations as either first-tier or second-tier by using a star system similar to the Michelin restaurants guidebook.Įach station would receive one star for every category in which they scored above average, two stars if they exceeded expectations across all categories, and three stars if they were exceptional in every regard. The program’s origins date back nearly 20 years when BP and Chevron decided to collaborate on the Quality Gasoline program initiative.
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The goal was to give drivers a standard for quality that could be easily understood, even if it wasn’t based on science, so people could easily recognize the best quality gas. It’s up to individual states like California to create their own regulations on fuel blends containing more than 10 percent ethanol.Ī group of oil and car companies initially established the Top Tier Gas Program to provide consumers with a way to make educated decisions about their gasoline purchases. The EPA does not regulate ethanol blends in gasoline, so E15 may not meet federal standards for its volatility or octane level. Its regulations set standards for octane levels, aromatics, and other chemicals that are added to regular unleaded and premium fuels.
The EPA regulates the fuel quality of gasoline sold at gas stations in the United States.
#Which gas stations have gas how to#
How to Find the Best Quality Gas for Your Vehicle.Which Gas Stations Have the Best Quality Gas?.
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