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Discussion Starter · #1 ·
My box came with whatever oil the dealer uses so when i did my second oil change i switched to full synthetic mobil 1 i did not notice any improvement in gas mileage so i switched back to whatever the dealer is using should i have waited a while before switching back to see an improvement the box only has 8000 miles? right now i'am averageing 24mpg all city driving.
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