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...
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Weight is around 33,000 as we are traveling, towing '04 GC around 4,000. My usual speed is 62 - 64 about 1700 rpm locked in 6 gear. Level ground no winds the computer will show 7.5 - 8.5 current mpg. However, from NC to AK we did not have much level ground or zero winds.
I will contact Cummins for some advice.
Thanks
Weight is around 33,000 as we are traveling, towing '04 GC around 4,000. My usual speed is 62 - 64 about 1700 rpm locked in 6 gear. Level ground no winds the computer will show 7.5 - 8.5 current mpg. However, from NC to AK we did not have much level ground or zero winds.
I will contact Cummins for some advice.
Thanks
