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worse MPG with 89 octane?

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#11

09-06-2009, 09:07 PM

canadian wheeler

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Same thing happened to me. I switch to 89 on my truck and lost about 1.5 MPG.

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#12

09-07-2009, 12:34 AM

lxman1

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Try resetting the PCM. Let it relearn your driving habits.

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