wow.. that's great. Are you sure it hasn't been changed before your ownership?

So how often do you change the clutch fluid?

I wonder if Spooler is onto something with the stop and go traffic. I'm not entirely educated on this style clutch but if people sit there at every light with the clutch peddle push down and in first while waiting for the light to change, it may heat things up. Isn't there a roller bearing or something that also wears prematurely from same negligence?

Few if any owners here ever accept or acknowledge the fact that the owner's manual (mine is the 2016 base model) specifically indicates that the car must be in neutral with the cluck FULLY disengaged when stopped. For example stop signs, traffic lights etc. High slippage, quick disengagement under hard acceleration etc. Puts undue stress on the csc. I've owned many MT cars and never wore out a clutch disc, pressure plate or flywheel. I've replaced many clutches for people that couldn't understand why this happened so "soon". How you drive is directly proportional to how long our total clutch mechanism lasts free from problems. Oddly many nissan dealers don't actually have 6 csc and/or cmc stocked on their shelves. ..wonder why?
Maybe we should drive these cars in the manner in which we can afford re. Repairs and wear and TEAR....just my 12 cents!

I had the clutch fluid changed in Jan 2016 after owning it for 2yrs. the previous owner had all the records since the work was done at the stealership. he did say it had the steering lock problem.:driving:

I can't imagine anyone sitting at a stop light with their clutch pedal depressed. As soon as I come to a stop, for any reason, I immediately stick it in neutral and release the clutch. In fact, in stop and go driving, I just let the clutch out to get the car rolling and then put it in neutral and coast. Knock wood, with almost 40K, I still have the original CSC.

I totally agree with what you and few other posted on this thread about some of the potential reasons for the CSC premature failure.

Having the clutch depressed all the time certainly increase the wear and tear of the entire clutch system as some of you stated. Shifting hard at high rpm and riding on the clutch would definitely put even more stress on the clutch system.

Thanks all for providing the productive comments/opinions. :tiphat:

OP what year is your Z? Mine is a 14 nismo with no issues

I have a 2010 tour/sport/6mt. As stated earlier, the CSC was changed around 30k miles under warranty.

There is absolutely nothing wrong with the clutch plate - I don't think anyone is saying there is. I currently have 83K miles on my stock clutch with absolutely no signs of slipping at this time; I would fully expect to get 120K miles out of it. Yet I have been through 4 OEM CMCs in those 83K miles. I'm sorry but the clutch hydraulic system in this car is garbage. CSC and CMC failures are too common on the Z to be normal wear and tear, or else someone at Nissan has a ridiculous understanding of what constitutes normal wear and tear.

Most of us know about the early failure of the CSC/CMC. The purpose of this thread is not to dispute the frequent/early failures, but an attempt to get a better understanding of why these failures occurred in such a wide range of mileage.