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2016 Tundra TSS 5.7 Mileage

This is a discussion on 2016 Tundra TSS 5.7 Mileage within the General Tundra Discussion forums, Tweet Driving around town I have been used to 14.5 MPG. I filled up one day on some non-ethanol fuel ...

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    bdk437 is offline New Breed
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    2016 Tundra TSS 5.7 Mileage



    Driving around town I have been used to 14.5 MPG. I filled up one day on some non-ethanol fuel and now my around town mileage is 16.5 - 18 MPG.

    On the highway its greater but I have not run the highway for any length of time to get a good reading since I fueled up.

    Has anybody ever noticed this? If not please try and see if you get the same results...


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    A few weeks ago, I found some ethanol free gas in Lafayette LA for only 10 cents a gallon more than the ethanol laced gas. I was only able to put in 18 gallons or so but I still saw an improvement of about 1.5 mpg.

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    Ethanol has about 1/3 less energy than gas, you'll definitely get better mpg.

    I drive up to Whitesboro to get it for my small engines, hate running ethanol in those. Let 10% gas sit in a can for a while, it will separate.
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    RONE is offline SuperCharged DVM
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    Quote Originally Posted by planomateo View Post
    Let 10% gas sit in a can for a while, it will separate.
    Does the gas or the Ethanol go to the top? I assume Ethanol?

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    It probably would except for one disturbing fact .... ethanol is hygroscopic (it absorbs water). When the ethanol separates from the gas it combines with moisture in the air and sinks to the bottom of the tank. That is why everyone had to switch to plastic fuel tanks. Ethanol in gas will rust out a metal tank.

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    I find the ethanol-free gas using this https://www.pure-gas.org
    They also have smartphone apps.

    Everything I have runs better on it, especially my small engines. My chainsaw noticeably has more power.

    The only thing I prefer not to use it in is my ATV (Yamaha Grizzly). It runs great with it, but the engine braking just about disappears, and I love the engine braking on technical downhill terrain. It may be that the engine braking just works best with 87 octane rating, and the ethanol has nothing to do with it. Around here, I can't get non-ethanol under 93 octane rating. I could try putting regular 10% ethanol premium in there and see if there's any difference in the engine braking than the non-ethanol. ...or I can do nothing, because I really don't give two sh*ts about it... :-)


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