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20/09/2023 9:29 am
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2015 Nissan Sentra 120K miles
The gas mileage has gradually significantly dropped on my Nissan sentra. It used to be 30 plus mpg, prob now around 20. No noticeable change in performance. No check engine light. Changed the upper oxygen sensor and reset the computer with the help of one of your videos. Possible slight improvement but not much. Ideas?
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20/09/2023 12:17 pm
We get asked this a lot, which is why we added a section on this topic under FAQ (go there and look under ‘Fuel’). Try that first.
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