Richard wrote:


If you buy your auto tires at Costco they fill with nitrogen and put a
nice green cap on the filler.

Richard
www.craggyaero.com

On the other hand, if you should fix a slow leak on your car with some
of the fix a flat goo cans, the propellant gas is butane or propane.
They thoughtfully provide a wheel sticker to warn your mechanic to
take care when removing the case after using the product though....

Brian W