Newbie question about fuel type...
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This is a discussion on Newbie question about fuel type... within the New Member Hangout forums, part of the Community - Meet other Enthusiasts category; I just purchased a used 2006 wrx which had about 40k miles on it. By mistake, I filled it up ...

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    Newbie question about fuel type...

    I just purchased a used 2006 wrx which had about 40k miles on it. By mistake, I filled it up with 89 octane fuel. I now know that I should be using 91 or above. I'm planning on topping off with 93 once I'm at 3/4 of a tank. My questions is this... am I at risk of causing permanent damage to my car after one tank of lower grade fuel? I apologize if this question has been asked before... I'm new here.

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    DUB
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    Quote Originally Posted by durrani View Post
    I just purchased a used 2006 wrx which had about 40k miles on it. By mistake, I filled it up with 89 octane fuel. I now know that I should be using 91 or above. I'm planning on topping off with 93 once I'm at 3/4 of a tank. My questions is this... am I at risk of causing permanent damage to my car after one tank of lower grade fuel? I apologize if this question has been asked before... I'm new here.
    It has been asked before and no, you aren't going to destroy anything. Just take it easy and stay out of boost until you burn through it all.

    Despite what others will tell you, it is not necessary to drain your tank.

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    Quote Originally Posted by DUB View Post
    It has been asked before and no, you aren't going to destroy anything. Just take it easy and stay out of boost until you burn through it all.

    Despite what others will tell you, it is not necessary to drain your tank.
    Thanks for the quick reply! That is reassuring. At what point does boost occur by the way? I haven't pushed the car any further than 75-80mph.

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    Registered User Timdog1650's Avatar
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    Stay under 3k RPM and if you start feeling yourself getting pushed into the back of your seat ease off the throttle. You can go 75mph on the freeway and not use any boost, boost only builds when you have your foot on the gas and are accelerating through the RPMs.

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    Cool. Thanks guys for the info. I really appreciate it.

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