I have a Ford F350 4x4 with a 7.3 liter Powerstroke diesel. Subtracting the Gross Vehicle Weight from the measured weight of the truck, it has a factory load capacity of 3000 lbs, That's with a full fuel tank and me and the dog in the cab. It came with aftermarket overload springs, I have no Idea of what the rating of those springs are, but the total capacity is somewhere higher than 3000 lbs.
I haul two yard loads of gravel for my driveway a couple of times a year, that's about 5800 lbs of rock per load. It s a twenty mile round trip to the gravel pit and back to my home. I've been doing this for the last ten years and haven't had any problems with the truck. It squats about four inches with this load and is nowhere near the spring stops.
I usually only get one ton of pellets at a time, but I wouldn't think twice about hauling two tons at once.
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