Help with fuel / oil mix ratio

Discussion in '2 Stroke Bicycle Engines & Kits' started by Ron-P, Jan 23, 2009.

  1. Ron-P

    Ron-P New Member

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    I'm new here with a new bike. I have a 2-stroke 80cc engine and was wondering what the ratio is for mixing. I searched and see posts with 16:1, 20:1...etc., but I'm not clear on what that exactly means. I've never had an engine where I had to mix the oil with the fuel.

    The guy I bought the bike from told me 4.1oz of oil to 1 gallon of gas, does this sound correct? How does that translate, or does it, into the figures above?

    Happy Motoring!
     
  2. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    If you look at the bottle of 2 stroke oil, you will see the correct amount to mix with a gallon of gas.

    You want to mix the first tank at 20:1, then go to 24:1 for another gallon.
    After that some guys go to 32:1 synthetic. I use 24:1 "regular" 2 stroke oil.
     
  3. seca40

    seca40 New Member

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    Is this a new engine? Did the guy you bought it from ride it much before you got it? Bikeguy is referring to the break in period for a new engine. First gallon second gallon etc...

    128 oz. per gallon
    1 0z of oil = 128 : 1 mix
    4 oz of oil = 32 : 1 mix and so on.

    Or use this.

    Gas Oil Mixture Ratio Calculator
     
  4. Ron-P

    Ron-P New Member

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    Thanks guys. The engine is new, it has 42 miles on it as of today. Thanks for that calculator, that really helped.
     

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