Premium or regular?

Discussion in 'Motorized Bicycle General Discussion' started by tvc15, Aug 31, 2010.

  1. tvc15

    tvc15 New Member

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    What type of gas should I use and what is the perfect mix for synthetic oil?
     
  2. BarelyAWake

    BarelyAWake New Member

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    I'm afraid your question is a bit too general and prone to personal preference...

    ...but generally speaking, high octane fuels are for high compression engines (which most stock bicycle engines are not) & the "best" ratio for a synthetic is whatever the manufacturer of the synthetic oil recommends for that oil ;)

    We've ppl runnin' anywhere from 24:1 to 100:1 and all seem to love w/e it is they've got lol
     
  3. Kevlarr

    Kevlarr New Member

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    I like white eggs myself but other people swear by brown eggs. :D
     
  4. motorizedmatt

    motorizedmatt New Member

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    Personally I run 91 octane Chevron Gas with Castor 927 oil at a 32:1 mix and it runs great!
     
  5. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    87 octane is more than enough for a 6:1 compression ratio.

    Use the manufactures' suggestions for any chosen oil.
     
  6. scotto-

    scotto- Custom 4-Stroke Bike Builder

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    Love the smell of that 927....castor based oils rock when it comes to aroma!

    That is a very good oil as well, been using it for years in some of my two-strokes. Maxima K-2 is my fave however.

    And as for the topic here.....I'm a fool for premium in all single cylinder engines, 2 or 4-stroke, high or low compression....that's just merotfl
     
    #6 scotto-, Aug 31, 2010
    Last edited: Aug 31, 2010
  7. breno

    breno New Member

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    BP 98 octane/ Castrol Active 2T 16:1 seems to do the trick plug looks happy
     
  8. Nougat

    Nougat New Member

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    87 octane is plenty for these motors, but premium pump gas often has extra additives which may serve the engine well. Of course, those additives are designed for car engines, but I have to think it might help keep the carbon build up down.

    Better to make sure you're getting gas from a station that doesn't have water leaking into the tanks.
     
  9. Nougat

    Nougat New Member

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    Oh and don't go higher than 32:1 with standard 2cyl oil. 100:1 is for high end synthetics.
     
  10. breno

    breno New Member

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    I couldnt even dream of goin to 32:1 I reckon it would be way too leann, not sure if its coz of the higher octane we have here or the two stroke oil being used.
    I was using valvalene oil b4, after switching to the castrol the carbon build up has reduced massively.
     

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