Join Date: Dec 2010
Location: Carlton Oregon
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Actualy its the other way around. If the trans is constantly changing to lower and higher gears then you turn the Tow Mode on.
Tow mode will hold each gear longer untill it passes a time line for that speed in that gear with a certain throttle position.
I dont see any real difference in milage when in Tow mode then in regular.
Once im up to speed on the highway and its looking pretty flat i will turn it off just to see if the truck up shifts and generaly it doesnt. I have just gotten in the habit of towing all the time with it on as it also helps the transmission.
As for milage it doesnt matter all that much what i tow. I get 11-12 towing a 2K boat and the same towing my 6K boat. I got 12.5 towing a U Haul transport trailer and an Expedition on it 8K. Only time i ever seen my milage drop below 10 was towing a 13K boat then i got 8.
Generaly speaking when i tow i always try to keep my RPM below 2K preferable 1750 this keeps my boost around 10 and my speed generaly is at 65-67 with the cruise on.
08 F350 6.4 Lariat CC LB tows a 13 Moomba Mojo 2.5
2inch Level kit
Mini Max tuner
Diamond Eye 5inch exhaust straight pipe
HID headlights, and Fog lights
EGR delete <planned next>
Ladder bars <in the future>
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