Hydraulic clutches for manual transmissions use brake fluid to supply ... Pushing in the clutch pedal makes fluid flow from a master cylinder (or fluid reservoir) to the slave cylinder, which ...

but like brake calipers, sometimes it can spring leaks or otherwise fail, and it must be rebuilt or replaced. The master cylinder is topped by the brake-fluid reservoir, which must be kept full.

Some Mustang owners with brand-new models may need to get their cars checked for leaking fluid. Ford Motor Company issued a ...