Lacking Power
I purchased a 1998 Gulf Stream Sun Voyager today. It has a 5.9 liter Cummins Diesel with Allison 4 speed transmission. The test drive the owner took me on was about 20 miles, since I didn't drive I...
Forum Discussion
Heck my ISM has to down shift on steep hills. I had an 8.3 ISC that would get down to 45 to 50 on steep hills too. Depends on what you think is low and the grades steepness.
