Hi everyone. Not posted for a while hoping someone can help Have just had my air on regased on my 2002 wrx bugeye at local garage where they added a dye to highlight any leaks. Checked under bonnet this morning and noticed green fluid leaking from the aircon sight glass. To be honest I'd never noticed this small sight glass box before. I notice there is a screwdriver slot on top of the glass so can this be tighten as looks like sealed unit complete with the pipes . I can find no details anywhere about this sight glass or replacements. Hoping you can advise. Thanks Greg