This is why I have a shop rule.
If the clutch slave or master cylinder is bad, they are both replaced at the same time.

My Direct Experience over 35+ years:
If one has failed, the other (typically) will fail within one year.

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__________________
ASE Master Mechanic

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D

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