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    Mazda 6 2006: 91 Unleaded seems OK

    Mazda Mazda Advice Mazda 6 Mazda 6 Advice Mazda 6 2006

    MAZDA recommends the use of 95 octane fuel in my 2006 Mazda 6, but I've been using regular 91 unleaded since day one and have done 130,000km. But I recently read that you could damage your engine if you use a fuel with too low an octane rating for a long time. Should I switch to the recommended 95 octane/E10 ethanol fuel?

    Answered by CarsGuide
    22 January 2010
    Graham Smith

    In a sense you've already answered your own question. You have used 91 octane without a problem. The Mazda 6 will cope with the lower octane but will run at its best on the fuel with the higher number.

    Disclaimer: You acknowledge and agree that all answers are provided as a general guide only and should not be relied upon as bespoke advice. Carsguide is not liable for the accuracy of any information provided in the answers.
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