We have A 1999 Adventurer(model 34g) and its been good so far. Left last Oct,and made a trip from Calif,to the east coast and back then 600 miles down into Mexico then back to Calif. About 9000 miles. It ran great and avg about 8.5 mpg.This was pulling a small pickup. The one thing you must do is make sure the Radiator is CLEAN and that the recall work for the blow by tube was done.
1999 Adventurer Pusher Model 34V ISB 5.9