OEM CSC over 60k miles?

djc119

30K so far on my '14 Coupe and still OK.

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'14 BS Sport Touring Coupe M6 | Stock

nis350

it is interesting that there is such a huge range in term of mileage between failures. I read some failed with less than 10k miles while other lasted 5 times longer in term of mileage.

I wonder if it has to do with 'how' the car is driven?

Spooler

It has to be driving conditions. If you sit in stop and go traffic it must be an issue. Heat is no doubt what is causing the problem. I have to change my fluid every 8K miles because the fluid goes to crap. I use Motul RBF 600. I did on my previous car also. It would be interesting to get more data on peoples driving conditions, then we could point Nissan on how to test the CSC so they could duplicate the problem and come up with a solution. All we get on the board is a bunch of bitching.

nis350

Agree that driving condition is probably the main cause. Dropping the clutch at high rpm and speed shifting would generate a lot more heat and vibration.

I imagine the fluid would be less of a factor under normal driving condition. The fluid should not deteriorate the rubber seals assuming they are compatible with the brake fluid.

stansens

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!

nis350

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.

JARblue

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.

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nis350

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.