Dad ran 2wd dump trucks for his business, he never plowed so didn’t see a need for 4x4. But he ran them year round for concrete work and as soon as I was driving a manual when I was 17, he put me in the second dump truck most of the time. He ran aggressive tires in the back and they all had a limited slip rear. They went like tanks, better than some 4x4s. The one time I had it stuck in some muddy ground after dumping, I decided to transfer some more weight to the back… by that I mean I ran the dump bed all the way back up, then played the clutch ever so nice and that was juuust enough to get rolling again. I had disengaged the PTO before I tried moving so I didn’t have to worry about revving it and could just hit the down “button” (cable driven, there was a bracket with two big buttons that you pushed or pulled) and drop the bed as I went.