Just like the titles says.

I have had my bottle filled for 2 years now and have only sprayed on it once. I plan on going to the track this Friday and was wondering if nitrous goes bad after a period of time in a bottle. I only sprayed it for a few seconds so I havent lost that much nitrous, pretty much still a full bottle.

So does it go bad ?

 

i could be wrong, but as long as your valve was closed ( like it was sitting hooked to the car) , or the valve was closed period you should be fine

 

Ok. Good deal. The valve is closed and has been closed.