In article ,
Jonathan Simpson wrote:

The response varies. Apparently they can get fined for allowing
non-Professional Dispensing Engineers to touch the gasoline pumping
machine apparatus. Attempting to do so can get you a very stern warning
or shout followed by who-knows-what. If the professional dispensing
engineer doesn't see you (not likely) or just doesn't give a damn you
may be in better luck. It's particularly frustrating when you just want
to fill a portable can and not have someone spill the gasoline you are
paying for all over the place.

I was in NJ the other day, and was happy to take advantage of the $0.25/gal
cheaper gas prices compared to NY, while the PDE got his hands dirty
instead of me.

What I really don't understand is the sign they had about filling cans. I
don't remember the exact wording, but it essentially said you can only
dispense gasoline into an approved metal container OR a container that's
red. So, as long as the container is red, it doesn't need to be approved?
I can drive up with a sheep's bladder or a hollowed-out gourd and fill that
with gas, as long as it's painted red? And I let the PDE do the
dispensing, of course.