As cold weather approaches, it is good time to drain your air system wet tank daily. The wet tank usually has a pull cable attached to the drain. See the shop if you need help locating the wet tank. Draining daily prevents moisture from contaminating the brake system and possibility of a frozen brake valve when the temperature drops to freezing. If you continue to notice moisture coming from the wet tank, notify the shop as it may be an indication that your air dryer needs service.