Hi there all. I see nearly everyone on here is from USA or Canada, but our Mack trucks over here in Australia are mostly the same. I'm in central Queensland, in a coal mining area. The roads are rough as guts and we do a lot of gravel road work also. The old Macks take a hiding and generally fair pretty well. Theres 2 Fleet Liners (same as CH models) dump trucks with trailers, we call them truck and dog, with 470 HP E7 Vmac engines, a 01 Superliner with a Detroit Series 60 that pulls a drop deck semi trailer, and and older CH model 454 that pulls a semi side tipper sometime pulls two side tippers in a road train configeration. I found this site looking for a problem with the fleet liner, and have posted it. Cheers Woz