E85 Flex Fuel vs Reg Fuel

I have a 2010 Tundra (5.7 and 4x4) with E85 flex fuel option. I have always ran regular gas. Recently while in VA, I saw the option for the flex fuel at the pump. I was wondering if someone could tell me the pros and cons that has experience using both. I read that while running the flex fuel is cheaper by price but gas mileage is decreased. I was hoping that someone with actual experience could tell me more.
Thank you

 

I wouldn't do it. I always try to buy "top tier" gasoline in my vehicles. I run Ethanol free in my mowers, small engines, 2 cycle, classic car, and boat. I have heard of a lot of bad stories with e-85 and for no savings, I have no reason to try it. The mileage drops off to the point where the savings aren't worth the risk. I love the people who hunt down cheap gas to save $1.50 and run it through a $45,000 truck. If money is that tight, I think you need to make a few other life decisions... LOL!

 

I have a 13 crewmax with the 5.7 flex fuel. I tried a tank of E85 and I could tell a difference in power but it sucked it down fast! To me it's not worth the money you save. Also,if you run reg.fuel then you don't have to change your oil every 5,000 miles like the manual says. Just my 2 cents worth.

 

I wouldn't do it. I have Flex Fuel in my 17 but never put E85 in it and never will. All my gas powered tools at home are run on ethanol free gas. More expensive but will extend the life.

 

Welcome from WI. Stick with regular gas. The only pro I can see to E85 is that it contributes to slightly lower emissions. Other than that you'll see lower fuel mileage. Some studies show as much as a 30% decrease. It's hard on seals, gaskets, rubber and plastic. Ethanol is also hygroscopic. It absorbs water. Water in your fuel system isn't good. Ethanol is also known to contribute to rust and corrosion in fuel tanks and lines. Granted our trucks have plastic tanks and fuel lines in newer vehicles are designed to carry gas with ethanol in it but it's still corrosive. Ethanol also breaks down quicker. So, if you get a tank of E85 from a station that doesn't go thru it very fast your going to get really poor fuel. Bottom line... corn is for feeding cattle and hogs, not our trucks.

 

Thanks again guys. I was kinda sketched about it and glad I didn't. I've had the ethanol eat through lines on lawnmowers, weed eaters, and other small engines. Just didn't know if the flex made it safe or better.