Back in 2005 or so, working on Bryans house. No cooling system. The moto with this thing, was drive it till it gets so hot that it stalls, wait 20 or 30 minutes, then beat the shit out of it more. We did ALOT, seriously a HUGE amount of high RPM action with this thing too. This is just showing how easy it crawls over the pile :) This thing was just about the best thing ever. the suspension was so worn out, all the mostly bald road tires got excelent traction on the pile. It would just crawl over the pile with total ease. Incredible machine.