Autogas will change it's size when pressure and temperature change. Basically you will get more gas into a tank on a cold day with high ambient pressure then you would on a hot day with low ambient pressure.

European countries use different fillers, you must find out the make and type of your filler and contact major LPG suppliers such as nationalautogas to obtain the correct adapter.

LPG Refuelling Guide for Gas Guard Gun

LPG Refuelling Guide for De Visser Gun