You'll do better than me. Mine just clocked in at 8.8mpg, pulling about 6klb 8 hrs. 3.08 gearing & 5.3L. I had huge cross-sectional area though--an rv. First few hours were done at lower average speed, and I clocked in at 9.3mpg. Those extra 10mph over 55 really do a number on the 3.08 gearing when you're pulling a parachute behind you.x40oz said:Hate to resurrect the dead, but I have a question about towing and could not find the answer with the search.
If I plan to tow a 5500lbs boat 6hr over mostly flat land, should I use the tow/haul button. I will be cruising at interstate speeds 65-70 for most of the way.
I have the 04 Av with 3.73 and 5.3L.
I tow the boat all the time without tow/haul for short distance and the truck does fine. Just wondering since I will be on the road for a while should I do anything dif.
Thanks,