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hp 500 fuel
i have a 98 carbed 500 hp i run regular 87 octain gas seeme to run well. just wondering if i should be running high test or not.
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I have heard that higher octane leaves more soot on the transom and has no advantages. You may even lose some power. :)
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Ditto what Blueman said, be they carbed or EFI.
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