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Old 06-02-2012, 02:27 PM
hemi4life hemi4life is offline
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Join Date: Sep 2011
Location: calgary
Age: 26
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Vehicle: 2011 RAM 1500 Laramie
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Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
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Run 89 octane. It makes a difference. In city don't expect good mileage plane and simple. If ur getting 12+ MPG with all the starting and stopping involved in city driving I wouldn't complain. Highway 16-20 is very achievable depending on driving conditions and how fast ur going. 90 km is best mileage possible I have noticed. 110ish I think is 65 MPH is about best highway speed for ur MPG. Hope this helps but 89 for sure makes a difference.
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