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  1. #1

    What octane do you guys run?

    I'm relatively new to the PWC world, but I've been riding off-road motorcycles and ATVs for the bulk of my life. I've always ran BP 93 octane in my two strokes, but I was recently told that my jet ski doesn't need premium. What octane fuel do you guys run?


  2. #2
    eVolution54's Avatar
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    I run 87.

  3. #3
    twokexlv6coupe's Avatar
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    87 all day long, no problems ever. in my STi tho, premium and nothing else!

  4. #4
    steve45's Avatar
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    87. More octane doesn't improve performance unless the compression is increased or the engine is boosted. Too high an octane can actually hurt performance.

  5. #5
    what kind of ski do you have?

  6. #6
    I was actually found an interesting article on the internet about how bad 87 octane is for your engine. Take a look.

    http://www.marineenginedigest.com/sp.../wrongfuel.htm

  7. #7
    steve45's Avatar
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    I have to wonder how old that article is, as it talks about the new TC-W3 oils. I've never seen any significant coking of the piston skirt, and I think most carbon deposits are the result of oil, not gasoline. The article also seems to imply that the pistons contact the cylinder walls to dissipate heat--I don't think so.

    While I think the ethanol that is put in gasoline is a major problem, I really don't think 87 octane gasoline is a problem.

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