[RobSC]

I'm contemplating an auto drain valve on my 4 tanks...simply for the reason I can't get to them...easily.
But, the Bendix costs are over $140 and I'm not sure if I can trust an Amazon version at $30.
The manual petcocks on our '15 are pretty stiff and haven't been opened in over a year.
Having my shop air hooked up using a PC pancake has me enough concerned to give the tanks a check; the small, and cheap, inline dryer from HF gets "pink" after a day...so not much good.

Thoughts or experiences with an Auto Drain? IF so, and you have a good alternative to a Bendix, love to hear it.

Steve,

Do you know which air dryer you have on your coach?  I have the Bendix AD-IS and it is designed as an integrated system, combining the air dryer and reservoir functions into one unit, eliminating the need for a separate wet tank.  If you have this and are seeing moisture, it may be that the dryer needs servicing.  I have been chasing leaks for a year now and probably drained each of the tanks a dozen or more times.  Honestly, I never see any moisture.  According to the literature, the moisture is expelled from the system before being sent to any of the tanks.  I feel that it does this very well.