2004 ISL
We have '04 Tradition with ISL(370) Cummins, F/L chassis(chassis date July '03). We are about 3900 miles into our Alaska trip with an MPG average of 6.3. In the C/G I met a couple with an '05 Traditio...
Forum Discussion
You climbed through the Appalachians, across the plains (WINDY) and over the Rockies/Cascades,etc and you expect the same mileage as someone who traveled relatively flat roads (comparatively) to get to the same spot. Go ahead and call Cummins. I am sure the customer service reps need a good laugh. Their days are usually spent dealing with screamers.
Randy
Randy
