Hydragas, suspension

tommy

germany

hallo, i`am tommy from germany and i`ve got a austin princess 2 in my garage for years and i want to refubish it on day. but my suspension in down. how can i pump it up with hydrogas. and what kind of hydrogas is it? is it the same hydrogas like in cirön or lowrider cars. or is it a difent type os hydogas? has it got a special fluid nr. that i can buy? greeting tommy