Thank you for all very interesting answers. I bought the master cylinder from a company in Berlin dealing with Lancia Parts. I Will consult my friends about where to begin.

have a Lancia Fulvia 1.3 from 1974. I bought it 2003. It was in good condition. Had been used by a swedish lady living i Switzerland using it driving to golf. When I bought it I changed the break fluid to a syntetisk one advised by friends knowing much more about cars? About 15 years later the probl...