Interstate vs. secoundary roads?
I was wondering if driving the interstate using cruise countrol would save much gas verses the slow down, speedup of going thru towns? My truck seems to have a sweetspot towing of 63 mph.
Forum Discussion
rwbradley wrote:
I am curious why I am the odd one out. I am quite certain on my mpg findings, the computer in the car even confirms them. I would say that it is likely that there is no one answer as it probably depends on the TT/TV combo. In my case I have a small TT being towed by a gas SUV and am well under weight, however the TT is not very aerodynamic, and when driving at 60mph I am at about 2200rpm, when I get to 65mph I am at 3000rpm and I lock out overdrive to keep it from constantly hunting. My guess is that the biggest factor is gear ratio/rpm's. Regardless in my case because the sweet spot is 60 and there is a huge hit on mpg when I go up from there, secondary highways, even with occasional stop and go is hands down the winner for mpg.
This could also be due to the nature of the secondary roads. Around here, secondary roads go through lots of small towns, which means lots of stopping/starting. That eats into the gas mileage quickly.
