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06-17-2015, 12:05 PM
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#5 |
 Drives: 2009 Yaris 3dr Join Date: May 2009
Location: California
Posts: 135
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You might also want to downgrade to 87 octane fuel for a while. Unless you gone with a colder heat range spark plug, you may not be getting all the power out of the 91 octane fuel.
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| Tags |
| cold, fuel economy, mileage, mpg |
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