CSC failure covered under warranty?

Originally Posted by axmea?

My car's back in great shape. Warranty took care of the parts and labor. There were no visual leaks on the cylinder clutch, clutch lines, air bleeder valve, and CSC. The reservoir was full. The mechanic made a determination that the failure was due to an air leak allowing air into the clutch hydraulic system. They replaced the CSC, air bleeder valve, clutch master system, the flexible hose and bleed system.

Lesson is if the clutch pedal gives in, replace the entire clutch hydraulic system.

Parts replaced --
30610-JK00B Cylinder Assembly
306A1-JK40D CYL ASMY - CONC
30855-JK00C HOSE ASY Clutch
37120-AL60A BOLT (4 pcs)
Fluids

With a new car, how can air leak into the system? What caused it? Bad seals, hard driving, I dunno.