Getting ready for a trip tomorrow I checked LP and the tank was empty. Last check I had 2/3 full. The LP switch was left on from the previous trip. I had the tank refilled and when the LP switch is...
Yes, the regulator can leak. Grab a bottle of Windex (it works GREAT for finding gas leaks) and spray around the reg. and the connectors and rubber lines attached to it. If not there then crawl under the RV and spray every joint you find. But my guess is it will be one of the rubber lines or their green fitting that connect them to the tank.