Join Date: Dec 2008
Location: Northern California
Thanked 222 Times in 156 Posts
My guess is your not that far off. I pull a 12,000lb 36' trailer and do 10.3 but thats up and over mountains with a stretch of 8-10% grades and 15-20mph curves on the grades. Generally keep it at 60mph. Can do 12 on the flats.
Is your trip flat lands or hills? You are doing 70mph, 16k lbs and a dually with 4.10 gears. All three of those hurt your mileage compared to my truck. Have you tried keeping it 5th, while towing that kind of weight might help mileage and save the tranny, (See my 68rfe problem thread)
Remember not to talk bad about farmers with your mouth full!
2013 6.7 CTD 2500, 800 ft-lbs torque, 4x4 crewcab Larmine Longhorn edition, 6 sp. auto, 2 tone white/gold
--07 6.7CTD 2500 4x4, Quad Cab, Big Horn Pkg. 3.73, airbags, 6sp auto, with Mag-Hytec deep pan.- sold but not forgotten.
--08 36' Jazz 5th wheel,triple slide, 12,000lbs
--28' 22,400# PJ goosneck beaver tail trailer
--95 & 96 5.9CTD 4x4 5sp. ext. cab. 33x12.50x16 front, 33x15.50x16 rear tires. R-1 tread, wheelbase shortened 30". Used as tugs on farm
--81 IH 1800, DT466 210hp, 10 speed,
--95 FL70, 8.3 cummins 275hp, 10speed
--79 GMC 7000, DD 6V53 210 hp, 6sp ally
-- A whole bunch farm equipment, all colors
singles club # 198
WALNUT MEMBER #11(workers aganist lazy non-producers united together)