ok since we have moved to the new forum and if this has been answered don't kill me ok i know you are supposed to run premium with nitrous, but what if you have the nitrous installed but aren't using it at the moment? i mean if you have an empty bottle can you just run reg. unleaded until you decide to fill the bottle again and then go back to premium? Oh and by the way whats the av. price to fill a bottle of nitrous?