Per Ralph Mowery:
You sure are right about the new fuel cans. I have several old ones and
hardly spill any gas. I have one new 1 gallon can that I use for the 2
cycle gas/oil mix. I probably spill more out of it eahc time I use it than
I do out of the older cans all year.

Somebody observed that the manufacturers did a great job of fulfilling
the CARB mandate to keep gas in the can. They just didn't come
through when it comes to getting gas out of the can.
--
Pete Cresswell