Wait, dry plates pull BETTER? That makes zero sense to me. Metal on metal with no lube is how you weld two things together, not how you pull a load down I-80. And the part about grease collecting grit, what does he think is happening without grease, the grit just floats away? I have seen fifth wheel plates with grooves worn into them like somebody took a grinder to the steel, and every single one belonged to a guy who bought into that dry plate nonsense. Thirty years on the job and that is the advice he hands out, unreal.