5
Clogged Brake Lines
After driving my 1963 Austin-Healey for 21 years and putting on about 27,000 miles, I decided to restore it and put the Healey back into what I hope to be mint condition.
While sitting there over the years on jack-stands, all of the brake and clutch fluid drained out (or disappeared somewhere). I know that I would need to rebuild the master cylinders.