Regular or Premium gas for mowers?

Discussion in 'Lawn Mowing' started by Freddy_Kruger, Mar 22, 2006.

  1. Freddy_Kruger

    Freddy_Kruger LawnSite Bronze Member
    Messages: 1,064

    I never even thought about it before reading it on this forum.

    Any Pros and Cons?
  2. mulcahy mowing

    mulcahy mowing LawnSite Senior Member
    from ma
    Messages: 721

    I use high test I think the mowers perform better but it cost more, so now i use the thought gass is gass.
  3. Carolina Cuts

    Carolina Cuts LawnSite Bronze Member
    Messages: 1,152

    the only con I see at the moment is almost $2.83 gallon for premium. I'll pass.
  4. steve45

    steve45 LawnSite Bronze Member
    Messages: 1,325

    If the engine is designed to use regular, USE regular.

    Most people think you get more power from premium, but that is false. The BTU content is the same. The difference is that the premium fuel burns more slowly, reducing the chance of detonation. Detonation is a problem with high compression or boosted engines. Low compression engine, run low octane gas.
  5. CAG

    CAG LawnSite Senior Member
    from ct
    Messages: 344

    i use to use high test on everything except the trucks, but with the rising fuel prices last year I put high test in the mixed gas and everything else got regular
  6. Freddy_Kruger

    Freddy_Kruger LawnSite Bronze Member
    Messages: 1,064

    Regular it is.
  7. lawnmaniac883

    lawnmaniac883 LawnSite Silver Member
    Messages: 2,613

    Stihl recommends using mid grade gas in their trimmers, so that is what all of my equipment recieves.
  8. Jason Rose

    Jason Rose LawnSite Fanatic
    Messages: 5,858

    Ditto on the regular unleaded. And also, don't go by "so-n-so recommends mid grade" well what IS midgrade?? It's all about octane levels. Here it's 87, 90 (with 10% ethanol) and 91 octane. Some parts of the country it's 85, 87, 91.

    Most small engine books will give a minimum octane rating to be used, I think 87 is standard, and that would be considered "mid grade" if you live in an area that offers 85.
  9. befnme

    befnme LawnSite Bronze Member
    Messages: 1,413

    i use high test in my 4 stroke equipment . you get a better gph .
  10. MysticLandscape

    MysticLandscape LawnSite Bronze Member
    Messages: 1,020

    I use regular in everything, except the walker

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