2011-02-15 533 28.826 $2.859 18.49 "Bought the truck with 70,967 miles on it.
=====
Stock truck, no mods"
2011-02-22 527 28.651 $3.089 18.39 "=====
Stock truck, no mods"
2011-03-07 638 32.912 $3.619 19.39 "=====
Stock truck, no mods"
2011-04-07 845.5 45.752 $3.806 18.48 "3 different small fills.
=====
Stock truck, no mods"
2011-04-16 680.5 31.727 $4.129 21.45 "First fill up after beginning to make mods.
=====
DPF delete, Smarty Jr. w/ various tunes. EGR & throttle still in place"
2011-04-22 695.9 31.532 $3.869 22.07 "=====
Various tunes"
2011-04-24 910.8 34.466 $4.149 26.43 "=====
Fuel economy tune w/ #1 torque & #3 timing"
2011-04-29 505.3 19.446 $4.062 25.98 "Partial fill up (top off)"
2011-05-10 831 33.894 $3.629 24.52 "=====
EGR & throttle deleted"
2011-05-23 898.1 34.897 $3.849 25.74 "Avg Temperature: 65 deg F
=====
#4 timing tune"
2011-06-06 988.1 34.724 $3.694 28.46 "Avg Temperature: 72 deg F
=====
Switched commute to slower speed route, started learning DWB (Driving w/o Brakes) technique"
2011-06-20 1041.2 34.292 $3.809 30.36 "Avg Temperature: 75 deg F
=====
Added partial bed cover, started learning P&G (Pulse & Glide) technique"
2011-07-08 1180 34.801 $3.439 33.91 "Avg Temperature: 74 deg F
=====
Full bed cover, partial grille block, tires @ 70 psi"
2011-07-28 1071.4 37.526 $3.339 28.55 "Avg Speed: 29.0 mph
Avg Temperature: 82 deg F

Somehow got an extra ~3 gal in this fill up. I think I filled up the overfill. Correcting for the ""extra"" 3 gal gives 30.8 mpg.
=====
Moved closer to work (mostly same route, but shorter)"
2011-08-23 1243.3 34.223 $3.689 36.33 "Avg Speed: 28.1 mph
Avg Temperature: 76 deg F
Avg In-cab display: 36.6 mpg

Correcting for the ""extra"" fuel in the last fill up, actual mileage for this tank estimated at 33.1 mpg.
=====
Started using block heater in mornings"
2011-09-14 1117.1 35.065 $3.248 31.86 "Avg Speed: 29.7 mph
Avg Temperature: 70 deg F
Avg In-cab display: 34.8 mpg
=====
Bed cover back off"
2011-10-18 1024.3 35 $3.459 29.27 "Avg Speed: 29.8 mph
Avg Temperature: 61 deg F
Avg In-cab display: 33.9 mpg
=====
Included 150 mi interstate trip at 75 mph"
2011-11-08 1159.7 35.002 $3.644 33.13 "Avg Speed: 28.3 mph
Avg Temperature: 51 deg F
Avg In-cab display: 36.0 mpg
=====
Bed cover back on, tires @ 75 psi, oil pan heaters"
2011-12-08 1100.5 35 $3.099 31.44 "Avg Speed: 27.1 mph
Avg Temperature: 40 deg F
Avg In-cab display: 34.7 mpg
=====
Started learning EOC (Engine Off Coasting) P&G technique"
2012-01-09 1100.2 34.759 $3.199 31.65 "Avg Speed: 29.5 mph
Avg Temperature: 38 deg F
Avg In-cab display: 34.0 mpg
=====
CCV delete, full grille block"
2012-02-03 1107.9 35 $3.339 31.65 "Avg Speed: 30.8 mph
Avg Temperature: 36 deg F
Avg In-cab display: 34.6 mpg"
2012-03-05 1122.4 35 $3.259 32.07 "Avg Speed: 29.0 mph
Avg Temperature: 39 deg F
Avg In-cab display: 34.7 mpg"
2012-03-29 1180.8 35 $3.729 33.74 "Avg Speed: 30.1 mph
Avg Temperature: 59 deg F
Avg In-cab display: 37.6 mpg
=====
Engine insulating blanket"
2012-05-07 1194.9 35 $3.319 34.14 "Avg Speed: 29.7 mph
Avg Temperature: 58 deg F
Avg In-cab display: 38.5 mpg
=====
Oil switched to Amsoil Series 3000 Synthetic 5W-30 HDD"
2012-06-15 1435 35 $2.819 41 "Avg Speed: 28.9 mph
Avg Temperature: 67 deg F
Avg In-cab display: 43.9 mpg
=====
Differential oil switched to Amsoil Severe Gear Synthetic Extreme Pressure Gear Lube 75W-90, more EOC P&G"
2012-07-09 1457.3 35 $2.859 41.64 "Avg Speed: 28.7 mph
Avg Temperature: 80 deg F
Avg In-cab display: 44.1 mpg
=====
Cold air intake"
2012-08-15 1645.2 35 $3.319 47.01 "Avg Speed: 26.1 mph
Avg Temperature: 78 deg F
Avg In-cab display: 49.3 mpg

Broke the official world record for farthest distance on one stock-sized tank of fuel.
=====
Ram cold air intake, intense EOC P&G"
2012-09-20 1429.1 35 $3.459 40.83 "Avg Speed: 28.3 mph
Avg Temperature: 72 deg F
Avg In-cab display: 44.4 mpg"
2012-10-25 1508.1 35 $3.159 43.09 "Avg Speed: 25.3 mph
Avg Temperature: 57 deg F
Avg In-cab display: 46.6 mpg"
2012-12-06 1457 35 $3.329 41.63 "Avg Speed: 25.9 mph
Avg Temperature: 42 deg F
Avg In-cab display: 43.6 mpg
=====
Transmission fluid changed to Castrol Transmax ATF+4 Full Synthetic, front belly pan, winter AC disconnect, additional engine insulation, fog lamp hole block"
2013-01-11 1225.9 34.641 $2.799 35.39 "Avg Speed: 25.5 mph
Avg Temperature: 36 deg F
Avg In-cab display: 38.7 mpg"
2013-02-18 1415.2 34.789 $3.769 40.68 "Avg Speed: 25.7 mph
Avg Temperature: 29 deg F
Avg In-cab display: 40.6 mpg
=====
Kill switch"
2013-03-20 1560.4 39.006 $3.405 40 "Avg Speed: 27.2 mph
Avg Temperature: 33 deg F
Avg In-cab display: 41.2 mpg

Includes a 4.006 gal partial fill at 1,418.3 miles.
=====
Corrected odometer by 2.45%"
2013-05-03 1693.4 35 $3.219 48.38 "Avg Speed: 26.2 mph
Avg Temperature: 49 deg F
Avg In-cab display: 50.9 mpg
=====
Disconnected intake grid heater, some EOC P&G refinement"
2013-06-27 2009.6 35 $2.599 57.42 "Avg Speed: 25.3 mph
Avg Temperature: 70 deg F
Avg In-cab display: 59.4 mpg
=====
4.5 oz of Schaeffer's Diesel Treat 2000, side skirts, some additional EOC P&G refinement"
2013-08-22 1875.6 35 $2.719 53.59 "Avg Speed: 25.1 mph
Avg Temperature: 74 deg F
Avg In-cab display: 57.1 mpg"
2013-10-09 1913.6 35 $3.139 54.67 "Avg Speed: 25.5 mph
Avg Temperature: 70 deg F
Avg In-cab display: 56.0 mpg"
2013-11-19 1715.7 35 $3.019 49.02 "Avg Speed: 26.5 mph
Avg Temperature: 47 deg F
Avg In-cab display: 47.5 mpg"
2014-01-08 1413.6 35.75 $2.745 39.54 "Avg Speed: 28.0 mph
Avg Temperature: 33 deg F
Avg In-cab display: 40.0 mpg"
2014-02-07 1220.7 34.561 $3.159 35.32 "Avg Speed: 28.0 mph
Avg Temperature: 20 deg F
Avg In-cab display: 35.6 mpg"
2014-03-15 1400.1 35 $3.159 40 "Avg Speed: 28.1 mph
Avg Temperature: TBD
Avg In-cab display: 39.1 mpg"