Csc?

Quicksilvers

You are very fortunate you found that your Z had the CSC issue early and you were able to find out information regarding the CSC issue. I had to replace the CSC a total of four times before even finding out about the Z Speed Performance CMAK. If you trade your Z in the current state it is in any competent technician with half a brain will find this issue. They will deduct your trade in value accordingly and you will end up taking a unfortunate loss. Your best option is to park your Z until you can fix it. If you decide to trade in your Z and purchase a different vehicle you will find out that the next vehicle you purchase has it’s own set of issues too. Nissan could honestly care less about the CSC issue that plagues our 370’s and your bet option is fixing the issue and deciding if you want to purchase a different vehicle or keep your Z? We will see if Biden actually lives up to what he says and gives each American citizen $1400 that’s questionable??

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Mr. Clean

vtec to vvel

I've traded in a few cars within the past 5 years and at different dealerships. My last trade in was my '09 Z to the '13 Z, and the "inspection" consisted of them going my car, popping the hood, and starting it. They didn't drive it or anything and gave me a rough number from visual inspection. This has also been the base with the other cars being traded in. I will drive my Z here and there just to get the oil going, but won't do anything else. I will tell them to look at the CSC after signing papers.

Quicksilvers

It is inevitable that your Genuine Nissan CSC will fail eventually the question is when will it fail not if it will fail. Sounds like you are losing function of your clutch it is a tell tail sign your CSC could be on it’s way out. The issue with this failure is if you wait too long it will saturate your clutch with fluid ruining it and clutch/flywheel replacement will have to be done let’s face it a quality clutch/flywheel for your Z is on the expensive side. My advice is replace your flywheel with a new one and don’t resurface your flywheel unless it looks in new condition. Also the fluid can leak down the firewall and into your interior of your Z seen this before and the fluid will ruin your carpet and make your interior smell. Best option start saving/planning immediately. Install the Z Speed Performance CMAK you will thank yourself later. This is the perfect time to replace your clutch/flywheel since it is inside the transmission bell housing unfortunately. There are many options and you can call Joe at Z Speed and he will help you select the proper clutch/flywheel for what you use your Z for. I remember when my Genuine Nissan CSC failed the first time it left me stranded in the middle of no where waiting for hours for a tow truck to come.

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Mr. Clean

vtec to vvel

I haven’t driven her in about 48 hours and clutch fluid still at same level. If it was leaking into bell housing, would it only leak when pressing the clutch pedal or would it be a continuous leak?

Rusty

In the beginning. Only when you press on the clutch pedal. As it gets worse. It will start to drip as the seal wears.

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JARblue

I got $115

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vtec to vvel

Had some time today to drive the Z after parking her for a week. I did open the clutch fluid resevoir for the first time today after purchasing about 3 years ago. I've always inspected the fluid level with a flashlight, and didn't realize the gunk at the bottom with the fluid being a light golden color still. Didn't want to empty the fluid and bleed, so I took a few paper towels and managed to get alot of the gunk out from the resevoir, though I'm sure there is probably more within the system.

Topped off fluid with OEM Nissan DOT 4 and drove her purposely hard. No different feel in clutch pressure and no difference in shifting. The clutch fluid did go down slightly from the max line that I topped it off to.

So does this mean the CSC is the issue?

Spooler

You are good to go. Keep driving. Just do a fluid exchange every other oil change. It will last a while.

bcrider

If your fluid level dropped from when you filled it with dot 4, it had to go somewhere. You need to look around/underneath the clutch master cylinder and the bell housing

Ghostvette

My 2012 had 1600 miles when I bought it. I swapped out the Dot 3 for Dot 4 in the clutch master cylinder and drove it daily for 71K miles before a teenager hit me. Never had an issue with the CSC.

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vtec to vvel

So....it’s possible that it’s not the CSC?

Not anywhere outside or inside the car. No drips and no wet spots under the car, nor anything inside.

So if filling with dot4, would this mean it could just be a matter or swapping fluids and not any issues with the CSC? I don’t think the clutch fluid has ever been changed out.

Ghostvette

It's possible you had some Dot 3 boil off, which might explain the loss of fluid and no wet spots. Dot 4 doesn't boil as easily. I changed mine when I looked at the location of the clutch master and realized that there was quite a bit of heat where the line runs. I used a turkey baster to suck out the fluid, cleaned out any residue and refilled with Dot 4 every other oil change, just like Spooler suggested. No issues.

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SouthArk370Z

It's possible. But given the history of CSCs in 370Zs, my money is on a bad CSC.

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Spooler

If the fluid level is extremely low in the reservoir for a good while you can also kill the MSC at the same time. It happens.

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