db wrote on Sep 6^th, 2009 at 4:18am:

I had an aluminum Sigg w/ the O ring. It was always tough to get a proper seal. Lucky for me a bear ate that one. My others are all the Nalgene plastic fuel bottles with the pouring spout that stores inside. You can tell when you screw down the cap they won't leak. Puncture maybe.... If you don't need to pressurize they're great.

I have a RED Naglene fuel  bottle, but from what I've read on-line, they seem to be out of production? Anyone know different, or have source?
I solved the problem buy buying a Coleman Premium Fuel Liter, which comes in a plastic bottle. I just used the Naglene fuel bottle first and transfered the Coleman when needed. The built in pouring spout is a nice option. I like the Plastic bottles better than the Aluminum. They'll take a "hit", and don't dent or puncture as easy as the thin Aluminum bottles. For a little extra protection, I wrap the body with a thin Bubble wrap, secured with a Bungee Bob. In the side pocket, they're safe and secure, and easily accessible.