I picked up a 1/2 a yard of mulch on saturday with my 51,3100.measured height before and after ,with the weight one inch lower,A full yard or full bucket load did not compress springs a full two inches.I take one of those cheap plastic tarps and lay it in the bed first ,load the mulch ,fold the tarp over and just drive a little slower,these trucks where made to handle almost anything. old navy 51..............
