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My new 2015 is showing 500 to empty on exhaust fluid, but the tank is full, anybody have any suggestions. It also periodically shows a faulty tire sensor message that goes away at every restart. I'm also getting a whopping 12 mpg, my 2012 would get 18 routinely. Truck has 8,000 miles on it.
 

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My prior truck: 2000 F-350 Dually Diesel 7.3 4WD with 3.73 gears - 18 MPG was my standard for 16 years,
My current truck: 2016 F-450 Dually Diesel 6.7 4WD with 4.30 gears - 15 MPG is what i routinely get, calculated manually, not by the computer.

As to DEF usage, i currently have 2300 miles and just hit the 'below 1/2 tank' notice.

I would assume that my heavier curb weight, and shorter gears would have me burning through DEF (and diesel) a bit faster than an f-250 with taller gears.

Net net - i'd say you definitely should bring the truck back to ford for diagnostics.
 

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My new 2015 is showing 500 to empty on exhaust fluid, but the tank is full, anybody have any suggestions. It also periodically shows a faulty tire sensor message that goes away at every restart. I'm also getting a whopping 12 mpg, my 2012 would get 18 routinely. Truck has 8,000 miles on it.
Hi palomino,

As other folks have suggested, it sounds like it's time to visit your dealership. I'll help by looping in your regional customer service manager. To make that happen, PM me your full name, best daytime phone number, VIN, current mileage, and servicing dealer.

Crystal
 

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Tire pressure alerts have been directly related to using cell phone chargers thru the dash 12v port.
 
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