Hauled rockwall, 4 jumps, bunjee machine, all equipment for it all (trailor behind trailor) 5 people in the truck and did a little over 100 in ol blue, 1550 egt's... safe-NO, something to say ive done..yes. Roughly 18klbs and some change. I could of easily kept pulling.. stayed running around 80mph the whole trip (6 hrs)..tranny and motor temps were fine cruising 80 with cruise set egts around 1200