CSC first started showing symptoms at high altitude?

SouthArk370Z

How lucky do you feel? Your symptoms often precede a catastrophic failure. But, with frequent flushing, you might get lucky and go another thousand miles before it gives up the ghost.

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40 to 332

From your description, it may be the clutch master cylinder (CMC) that is the problem ... especially if there is no loss of fluid. Regardless of whether you fix the problem on the road or when you return home, if the problem proves to be the CSC, you should replace the CMC at the same time.

Quicksilvers

With the current mileage you have on you’re Z you are pushing your own luck with the risk of CSC or CMC failure close down the road. You should have rented a vehicle if you were planing on driving that far of a distance. I seen for myself that CSC or CMC failure can occur at any mileage doesn’t matter just depends on how you use you’re Z. Consistent flushing may increase the life but not by a lot. When you get home plan to install a Z Speed Performance CMAK CSC Delete, RJM Performance clutch petal assembly,RJM Performance CMC. Also check the condition of your clutch/flywheel to check for wear to see if it needs replacement.