[77newell]

I changed to the AD9 on both my 77 and 93 coaches. The AD9 dried the compressed air much better than the old fin tube drier. Once I put it in I never had water again in any of the tanks. My compressors were discharging very little oil and the AD9 seemed to remove the little it received since I never drained traces of oil from the service tank again. Given the amount of oil you are reporting discharging I do not believe any desiccant drier is capable of removing that amount of oil on a long term basis. And while it works it will spew the oil out the vent just as now. The desiccant driers are designed to remove oil mist, not oil drizzle which sounds to me like what you have happening. Sorry about this perspective, in some of our coaches the location of the compressor is enough to make a grown man cuss and lose blood.