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Please help! ISX15 poor fuel mileage
11-22-2020, (Subject: Please help! ISX15 poor fuel mileage ) 
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RE: Please help! ISX15 poor fuel mileage
We are getting into the winter fuel too... I have noticed my fuel mileage has dropped its normal .5 mpg, sometimes more depending on my weight.

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RE: Please help! ISX15 poor fuel mileage - Waterloo - 11-22-2020



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