I usually change the fluids and filters myself but this year I took it in for service. I'm not comfortable changing the air/oil separator filter so I had them do a complete engine and compressor service. They also replaced some fuel lines and repacked the wheel bearings. I was expecting a pretty hefty bill but not 1500.00. This is an IR 175 with a Deutz engine. How much do you guys spend a year on compressor service?