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
Fishinghat wrote:
You didn't indicate the weight of your coach, but even if you're in the mid 30,000 range, 6.3 mpg is pretty poor. Most ISC/ISL Cummins owners get up into the 8 mpg range, or better. (The ISM and ISX engines are down in the range you're experiencing.)
I beg to differ with you about that!
