tripleb

We should all know that a dirty air filter/less functional will result in a loss of power ( along with many other "things" ). The AC Delco seems to give a good balance of designed power along with fuel mileage. Case in point ... about a month ago, I replaced my AC Delco filter with a Fram filter. That weekend, I pulled my RV about 140 miles on an Interstate that I have traveled before with the same rig. I lost 1 mpg ... now, I know that different day temps/humidity/wind/traffic/etc will affect mpg but I found it interesting after changing back to a AC Delco that my mileage came back to where it was with the same rig.

Hey trx680, I pull this in normal drive with cruise at 68 mph without issue. If the road gets hilly, then I will press the Tow/Haul mode button.