Just a little update and interesting comparison and update on older versus newer .
Just completed a return trip to Florida from Just north of the NY State border. A distance of =/- 1500 miles each way. Both trucks running a90 USG aux tank.
My setup: 04 3500 DRW QC 4x4, NV5600 with smjr on tow, pulling a 37' toyhauler weighing in at approx 22000 combined. (high profile and maintaining full height for full length of trailer)
Sons setup : 2011 DRW QC 4x4, 6spd allison (IIRCC 390hp/765tq stock rating), pulling 42' bunkhouse weighing in at approx 23500 combined. (high profile tapering much lower to rear)
Best comparison mileage was 1050 miles fill to fill on way down and a 1020 mile fill to fill on way back. (Some pretty good pulls in PA and VA)
His truck is exact rpm in 4th as mine in direct and same for his in 5th and mine in 6th. His truck in 6th about 450 rpm lower than mine.
We ran a pretty consistent 68mph coming up with a 60mph avg over the driving time.
I have never seen two trucks run more closely in fuel consumption. US mileage going down was 9. 8 and return was 10. 2. Both fills were less than 1$ diff between trucks!! Almost unbelieveable! Mileage was not great but we had a deadline to meet (the wives at the airport in Tampa , lol)
His truck would hold 6th in towhaul a lot of the time. On the longer pulls I would drop to 5th and hold 60mph and he would hold 4th on same hills. Power was almost identical and he could not go by on the pulls but could maintain same speed.
I have to hold the new DMax engine a little higher after this trip!
Just completed a return trip to Florida from Just north of the NY State border. A distance of =/- 1500 miles each way. Both trucks running a90 USG aux tank.
My setup: 04 3500 DRW QC 4x4, NV5600 with smjr on tow, pulling a 37' toyhauler weighing in at approx 22000 combined. (high profile and maintaining full height for full length of trailer)
Sons setup : 2011 DRW QC 4x4, 6spd allison (IIRCC 390hp/765tq stock rating), pulling 42' bunkhouse weighing in at approx 23500 combined. (high profile tapering much lower to rear)
Best comparison mileage was 1050 miles fill to fill on way down and a 1020 mile fill to fill on way back. (Some pretty good pulls in PA and VA)
His truck is exact rpm in 4th as mine in direct and same for his in 5th and mine in 6th. His truck in 6th about 450 rpm lower than mine.
We ran a pretty consistent 68mph coming up with a 60mph avg over the driving time.
I have never seen two trucks run more closely in fuel consumption. US mileage going down was 9. 8 and return was 10. 2. Both fills were less than 1$ diff between trucks!! Almost unbelieveable! Mileage was not great but we had a deadline to meet (the wives at the airport in Tampa , lol)
His truck would hold 6th in towhaul a lot of the time. On the longer pulls I would drop to 5th and hold 60mph and he would hold 4th on same hills. Power was almost identical and he could not go by on the pulls but could maintain same speed.
I have to hold the new DMax engine a little higher after this trip!