Gas Prices Around the Country
-Tips on Efficiency
-Fueling Options
-Why Fuel Economy

Gasoline Prices
Around the Country


Gas Pump - Car Fueling Options

Premium Vs. Regular Grade Gasoline

The recommended gasoline for most cars is regular unleaded. Using a higher-octane gasoline than recommended by the owner's manual does not improve performance or fuel efficiency; it only costs more money. Check your owner's manual to determine the lowest grade of fuel you can use.
To get an Extended Car Warranty quote for your car, CLICK HERE.

Pat Goss from Motorweek TV Show gives his thoughts on fueling options.

Ethanol Blends - E85 and E10

Ethanol is an alcohol-based fuel made by fermenting and distilling starch crops, such as corn. It may also be made from "cellulosic biomass" such as trees and grasses in the near future. The use of ethanol can reduce U.S. dependence on foreign oil and reduce greenhouse gases.

E10 or "gasohol" is a blend of 10% ethanol and 90% gasoline sold in many parts of the country. All auto manufacturers approve the use of blends of 10% ethanol or less in their gasoline vehicles. E85, a blend of 85% ethanol and 15% gasoline, can be used in flexible fuel vehicles (FFVs), which are specially designed to run on gasoline, E85, or any mixture of the two. FFVs are offered by several vehicle manufacturers. To determine if your vehicle is an FFV, check the inside of your car's fuel filler door for an identification sticker or consult your owner’s manual. Several hundred filling stations in the United States currently sell E85.

Visit the U.S. Department of Energy Alternative Fuel Locator for locations of service stations selling biodiesel. NOTE: There is no noticeable difference in vehicle performance when low-level ethanol blends are used. However, FFVs operating on E85 usually experience a 20-30% drop in miles per gallon due to ethanol's lower energy content.


Biodiesel is a commercially available diesel-replacement fuel manufactured from vegetable oils or animal fats. It produces fewer greenhouse gases than petroleum diesel and, since it is made domestically from renewable resources, increases national energy security.

Biodiesel can be blended at any ratio with petroleum diesel, but it is most commonly sold at ratios of 2%, 5%, or 20%, denoted as B2, B5, and B20. Most vehicle manufacturers do not yet recommend using biodiesel blends greater than B5, and some state that doing so may void the engine warranty. Check your owner’s manual or with your vehicle manufacturer to determine the right blend for your vehicle.

Purchase commercial grade biodiesel from a reputable dealer. Never refuel with clean or used grease or vegetable oil that has not been converted to biodiesel. It will damage your engine. Use of biodiesel blends may reduce fuel economy slightly, less than 1% for B5.

Visit the U.S. Department of Energy Alternative Fuel Locator for locations of service stations selling biodiesel.

Other Automobile Fuel Efficiency Links

TIPS - Tips for improving car fuel economy and gas mileage

OPTIONS - Car Fueling Options - Premium, Regular, Ethanol, Biodiesel

TAXES - Automobile Gas Fuel Efficiency Tax Incentives and Disincentives - Credits and Deductions

WHY - Why Consider Fuel Economy

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