How long will my 2 stroke fuel last?

Discussion in 'Lawn Mowing' started by GracesLandscaping, Feb 26, 2010.

  1. GracesLandscaping

    GracesLandscaping LawnSite Senior Member
    Messages: 632

    im sure im going to get some smart remarks on askin a question like this but i am not sure so maybe someone can help! I havent had any work in a while and today i had to do a leaf job an didn't have any 2 stroke fuel so i had to mix some and i know that the oil goes bad after its been opened so how long should that can of fuel be good? i should be mowing in about a month.
  2. KarambaStar

    KarambaStar LawnSite Member
    Messages: 76

    I wouldn't worry about the oil going bad, however the gas will get stale if there is no stabilizer in it. What kind of oil did you use? It's becoming more popular these days for stabilizer to be included in the oil bottles. If there is no stabilizer, gas can become stale within 30 days, although the engine may still run you may notice problems like it being hard to start or sluggish. If it has stabilizer, it can go for 6 mos. to a year.
  3. Big C

    Big C LawnSite Bronze Member
    Messages: 1,642

    A few days ago I used the last of my mix made in Nov....
  4. Sammy

    Sammy LawnSite Bronze Member
    Messages: 1,734

    I still have mix from Nov. that I will be using in March.
  5. ALC-GregH

    ALC-GregH LawnSite Fanatic
    from PA
    Messages: 7,051

    I used up the last of what was mixed in November yesterday and have a 2.5gal can of mix I made up 2 weeks ago that I bought when I forgot to bring the bit I had left. At least I got another gas can. :)
  6. mowerbrad

    mowerbrad LawnSite Fanatic
    Messages: 6,268

    I still have a half gallon of mix in my garage from November. And the mix is still good, as I use it in my leaf blower when I blow out my garage every couple weeks. But I did use the stihl oil that has the stabilizer already in it.

    STIHL GUY LawnSite Fanatic
    from CT
    Messages: 5,226

    as long as you use stabilizer it will last a while
  8. topsites

    topsites LawnSite Fanatic
    Messages: 21,653

    Straight fuel a good 6 months, mix fuel at least a year, that's assuming you
    don't keep it out in the sun in the worst of 100 degree heat.
  9. GracesLandscaping

    GracesLandscaping LawnSite Senior Member
    Messages: 632

    i use the stihl oil i think its the hp ultra... its the white bottle for the 4 mix units

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