My experience with the PILOT and FLYING J stations is that at best, the condition and operation of their DEF pumps is terrible. We've not seen the need for the magnetic release, but these stations have nozzles in poor repair, leaking and extra short hoses with broken or poorly operating retract mechanisms. In addition, you have to enter your CC and loyalty card numerous times to get the pumps even to work. I've got 3-5gal containers and 6-2.5gal containers that I keep filled ahead of time, so when I need DEF, I have it. Yes, I know the bit about shelf life and storage and take appropriate precautions to keep my "stock" current and safe.