It is a good engine if you don't go over a 30 wt. motor oil in it because of the timing chain, a friend of mine has one that I work on and he has over heated it eight times with in a one year span and had it towed in three times so far, only one time being the rigs fault with a bad harmonic balancer the rubber went south and let the belts slip not letting the water pump work, re did the head gasket had .007 warp on the head, shaved it and good to go again with way over 100 k on it, I can not believe the abuse that thing takes, you have to be careful when the tow truck driver gets a hold of these the rear ends are thin and will bend if he tries to stretch it on the flat bed truck, other than that tough rig.