http://www.ebay.com/itm/20-Yellow-Fuel-Gas-Can-Jug-Vent-Cap-Chilton-Brigg-Rotopax-Gott-Rubbermaid-Anchor-/261376946220?hash=item3cdb47b02c:g:EZEAAOxyVLNS3WosI wish they'd sell a vent you could add, I got about 10 cans already.
The other benefit of the Wedco cans is you can get the corrugated flexible spouts with the screw on caps so you don't have to have a gas soaked spout dripping everywhere each time. I think Walmart still sells the Wedco cans.
As I typed that I figured there would be something on eBay. I very well might order those, thanks.
I would have to agree. I take half a dozen of them with me when I take my car to the road course and I much prefer them to the old style with the vent.I don't have any problems with the vented spout style. You just have to use it properly. Put the larger portion of the spout on top for venting air and the smaller one on the bottom. Never had any burping issues when you do it this way.