Wanted to try spreading manure with my 3039R. I ran in B range with the engine at 2500rpm, I could pull the spreader up a hill at 5mph and ran the spreader on flat ground at 6-7mph. I had one small spot where it started to bog so I lifted my foot a little on the forward pedal to keep the rpm's up. I also had to use 4wd a few times and was surprised my R4 tires didn't lose traction.