It's all about $$$$$...This past Tuesday...the little elbow hose on my COMFORT PRO APU broke while at a customer, thus dumping all the coolant in the truck on the ground. Did a M15..got a call from breakdown, yeah we know about this problem, "there is a recall out on this"...WTF! I close the by pass valve back to APU, So after 6.5 gals of water later...I limp into CLT, shop mgr..{we know all about this ...it's the elbow hose just off the apu water pump} I ask do you have one in stock...NOOOOOOdriver...you have to put your truck out of service and we have to ORDER it! Fleet Mgr::::you don't need APU , you can idle....WE HAVE FREIGHT TO MOVE!