Question about Aisin trans and 4.10 gears

[Azbeachbum]

I towed over 4000 miles this summer. The RPM numbers are about right at 70mph 1900, 80 was around 2200. 2017 Mega Cab 4X4 Aisin w/4.10, 41'Toy hauler combined weight about 26000. I would do the 4.10 in a heartbeat. Empty MPG 15.2avg hwy.

 

[Schumacher]

I have a 2014 dually, aisin, 4.10 gears, 1995@ 70mph.

 

[Slaw32]

I towed over 4000 miles this summer. The RPM numbers are about right at 70mph 1900, 80 was around 2200. 2017 Mega Cab 4X4 Aisin w/4.10, 41'Toy hauler combined weight about 26000. I would do the 4.10 in a heartbeat. Empty MPG 15.2avg hwy.

How about fuel mileage average when towing and at what speeds .

 

[Learjet]

FYI...This summer I took my 12,000 lbs high profile 5th east bound on I70 through the Eisenhower tunnel and never got below 60 mph in 4th gear with my 3500 DRW Aisin and 3.73. In the mountains I would lock out 6th and run in 5th. Flat ground 6th works fine.

This is what my truck came with, If I was ordering I would go with the 4.10 since I don't do much high speed unloaded driving.

 

[Azbeachbum]

It varied from low of 6.1 in Texas(lots of headwind) 70 mph.
Got best thru New Mexico into AZ 75mph 9 mpg .It's hard to keep your foot out of it but 60-65 mph was good for 1-2 mph better.

 

[dfb]

How about fuel mileage average when towing and at what speeds .

Towing under 65 usually at 60 I'm getting 10.3!. Montana 5th wheel .. 4:10, aisin, dually
4x4...