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Old 06-07-2017, 08:31 AM   #8 (permalink)
briano
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Join Date: Sep 2004
Location: Austin, Tx
Posts: 5,106

highway/extended trips do not hurt the mileage at all, it helps clean the DPF, however, city driving, stop and go...quickly kills your mileage and increases regens, etc. I do 90% city driving and had never gotten barely over 300 miles a tank. Every tank since deleting, has been 400+, filling up once a month instead of twice a month. love it!
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