Hi all,
Had 2005 Z 16 months now and still same problem throughout with clutch pedal fading to near floor when engine etc hot. Even worse when brake pedal pushed at same time. When cooled down all returns to normal. Not done 46,000 miles yet and i drive conservatively! (crazy I know but I am nearly 64)
Changed fluid but not sorted although was not upgraded type so replacing with DOT 4 Motul RBF600 as seen others here and there in US. cured the same problem with this.
I believe the fluid line gets overheated from the manifold and vapour lock occurs.
Not looked yet but should there be a heat shield to prevent this I am thinking.
Glenn.