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Old 07-28-2008, 03:26 PM   #10 (permalink)
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Blur - '10 Kia Forte SX
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Originally Posted by jesse.rizzo View Post
The octane ratings on the pump are minimum ratings. It's possible that if they are mixed with 10% ethanol, the 87 and 89 are both about 91 anyway. The change in mpg is almost definitely due to something else.
I guess we'll see once I fill up again.
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