We have a propane system with one tank on each side and an automatic changeover system
regulator. With one tank empty and the other very close to empty, we noticed a propane smell. I refilled one tank and was going to fill the other later (very$$ here), still had the smell. Checked for leaks, none found,I set the regulator (green dot) to the full tank. Still had a smell. Went and got the other tank half filled, set the regulator (green dot) to that tank (it is on the regulator side). Now we don't have the smell, was the smell due to having empty tanks??