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What does the 85 indicate in the fuel designation E85?

What does the 85 indicate in the fuel designation E85?

Ethanol fuel mixtures have “E” numbers which describe the percentage of ethanol fuel in the mixture by volume, for example, E85 is 85% anhydrous ethanol and 15% gasoline.

What does 85 mean for gas?

E85 (or flex fuel) is a term that refers to high-level ethanol-gasoline blends containing 51% to 83% ethanol, depending on geography and season (see Fuel Properties and E85 Flex Fuel Specification). It can be used in flexible fuel vehicles (FFVs), which are available from domestic and foreign automakers.

Does my Silverado have flex-fuel?

One of the easiest ways to determine if a vehicle is flex fuel is to look at the gas cap. A label on the inside of the fuel door will also indicate the fuel type. You can also check for Flex Fuel or E85 badging on the vehicle, or take a look at the eighth character of the VIN.

What kind of flex fuel does a Chevy Silverado use?

Flex Fuel – E-85 Ethanol. The ability of the new 2011 Chevy Silverado to run on most forms of alternative fuels today is very useful. These fuels, including the E-85 Ethanol fuel, are found in most every state with the exceptions of Alaska, Connecticut, Maine, New Hampshire, Rhode Island and Vermont.

Can a flex fuel vehicle run on E85?

Sometimes you might end up paying more in gas for the same trip… and in more ways than one if your vehicle is not designed and engineered to burn E85. Running ethanol based fuels in Flex Fuel Vehicles is fine since they are specifically designed to withstand all the effects ethanol blends come with.

When did General Motors start using flex fuel?

But not all of them have that shiny badge declaring them flex-fuel vehicles (FFVs). Sometimes a yellow gas cap is the dead giveaway, but those caps only started appearing on model-year 2008 vehicles (2006 for General Motors). Buried deep inside the owner’s manual, too, is a notice about which fuels are approved to run in your vehicle.

What are the benefits of a flex fuel vehicle?

The benefits of a Flex Fuel vehicle is that the fuel control systems in Flex Fuel vehicles adapts on the fly to whatever mixture of fuel is in currently the tank. The Flex Fuel 2011 Chevy Silverado is designed to burn E85 fuel at maximum efficiency.

Sometimes you might end up paying more in gas for the same trip… and in more ways than one if your vehicle is not designed and engineered to burn E85. Running ethanol based fuels in Flex Fuel Vehicles is fine since they are specifically designed to withstand all the effects ethanol blends come with.

Do you need to change fuel hoses for E85?

Replacing fuel hoses, fuel pumps, gaskets, seals, fuel filters, fuel injectors, throttle bodies, etc. and other components besides tuning your fuel system, can easily run the bill up since you need to change so many components to properly run E85 fuel blends.

Why does E85 gas have a short tank life?

E85 fuels are hygroscopic – That translates into a short storage and tank life because its prone to absorb moisture from the air. It also means that depending on how long the gas stays in your tank or the humidity level of your geographic area, you can experience poor performance and even problems with fuel injectors.

What happens to E85 fuel in cold weather?

Cold weather brings humidity up and E85 fuels are very receptive to this. They tend to attract this extra moisture and you will most likely end up with water in your gas tank that participates in rust formation and also can choke your engine if you’re running on carbs or even damage your fuel injectors.

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Ruth Doyle