What’s the consensus on the Duramax reliability?

[randeez]

Yep, I agree. Last weekend I towed my 29 foot boat from far western New York to Seneca Lake and back. Total round trip miles is approximately 350 miles. Average mpg was 17.8. Def hardly moved. Maybe only line on the gauge. Most of the trip was on route 86 which is quite hilly. When you get on the finger lakes region it is extremely hilly. Amazing how well the baby diesel handles the hills.

Padraig

no problems towing here either, getting ready to do about 1500mi with 6k car/trailer next week.
has made the trip a couple times with no issues. if i tuck in traffic i usually see nearly 20mpg and def isnt even a thought.
i did yank a loaded to the gills uhual 6x12, along with the truck pretty well stuffed from western maryland back down to florida back in december, that trip had the def warning screaming at me after a couple hundred miles, but it was 80-85mph the whole way still averaged over 16mpg iirc