Wow - that is a horror story. 98 in the bus would have done our dog in.

Had my OTR serviced before our big trip at Prevost FW. Ours is a 134a system, and I had noticed some oil marks in the area of the compressor pulley and in the condensor bay around a couple of components. System calls for 24 lbs, and they vacuumed out 18 after 2 years since last service. Had a shaft seal replaced and found crimped wiring to the clutch coil in the process. Replaced that as well. System worked great on the trip (67 with 108 ambient).

I did watch over the tech's shoulder doing the work until about 9 PM. I know he was getting annoyed, but tough shit. I dogged him about the swap on new freon vs the recovered freon, and the total charge. After charging for a while and only showing 20 lbs of freon in the system, he was ready to call it a day. I asked about getting to 24lbs, and he said "we can get these things to cool a bus to 55 degrees in the summer, but this should be good enough." It wasn't for me and we kept working at it for a while longer to get more freon in the system.