I eventually settled for buying a substitute called, worringly, "Brake LHM Plus - Hydraulic system mineral oil!" made by a company called Brake Engineering. It's supposed to meet all the Citroen specs ................... it's not fluorescent green, that's for sure, although it does have a greenish tint!
Anybody heard of this stuff - any gotcha's I should know about? After doing the flush/drain/clean refill/bleed and aerobics thing, the suspension's a lot nicer and, having got rid of several cubic litres of air bubbles from the brake lines, the brakes now release smartly and the ticking's now a nice rhythmic 30-second event. However, I don't want to compromise the ultrafine tolerances inside the hydraulic system if this non-genuine type stuff's a bit iffy.........
What's the concensus? Do I junk it as soon as I can find a supply of the real vulcan blood, or are substitutes permitted?
Thanks in advance, blokes.