Motorcraft nozzle has actual vent tube that goes into container. Will drain it in a few seconds once DEF gets below vent line. I ran across it on here or another forum when I was truck shopping this spring.
https://www.amazon.com/Motorcraft-N...coding=UTF8&psc=1&refRID=RJ7B58K5DJQ809HN12KZ
https://www.amazon.com/Motorcraft-N...coding=UTF8&psc=1&refRID=RJ7B58K5DJQ809HN12KZ