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2 Stroke Bicycle Engines & Kits 2 stroke motorized bicycle engine kits need careful installation and setup, find out how from our professionals here!


Help with fuel / oil mix ratio

2 stroke motorized bicycle engine kits need careful installation and setup, find out how from our professionals here!


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Old 01-23-2009, 04:16 PM
Ron-P Ron-P is offline
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Default Help with fuel / oil mix ratio

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!
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Old 01-23-2009, 04:31 PM
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Bikeguy Joe Bikeguy Joe is offline
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Default Re: Help with fuel / oil mix ratio

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.
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Old 01-23-2009, 05:12 PM
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Default Re: Help with fuel / oil mix ratio

Quote:
Originally Posted by Ron-P View Post

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!
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
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Old 01-23-2009, 06:34 PM
Ron-P Ron-P is offline
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Default Re: Help with fuel / oil mix ratio

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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