Has anybody used those top up bottles as sold on ebay/Amazon and what was the outcome ?.
https://www.amazon.co.uk/Aircon-Con...con+top+gas&sprefix=aircon+top,aps,165&sr=8-3
https://www.amazon.co.uk/Aircon-Con...con+top+gas&sprefix=aircon+top,aps,165&sr=8-3