On Sat, 11 May 2013 16:11:04 -0400, Percival P. Cassidy wrote:

And our gas cans without vent caps work just fine -- two 6-gal. ones,
three 2-gal. ones.

After reading this thread, I took a walk around the yard and
gathered up a few of my Blitz gas cans, all relatively new.
http://www3.picturepush.com/photo/a/...g/12925521.jpg

I'll open a separate thread on just the engineering issues
with the Blitz design, complete with detailed pictures ...