[macgyver]

After having the old girl sit around mostly for a few years , with the odd short trip its time to head south this winter ? After running the coach and checking things out the other day , I noticed the air pressure did not get much above 80 psi . I found that the relief valve on the factory electric compressor was venting , and the smell of that air would be enough to gag a maggot ! Is there a place that I can add some air brake conditioner to clean this problem up ? It sure seems there is some kind of a science experiment going on in the system someplace ? Thanks for any ideas Don H.