Csc?

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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2015 Magma Red 6MT Sport Tech/2012 Fairlady MB 6MT Base (RIP 08032018)https://www.nicoclub.com/FSM/370Z/Coupe/

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.

__________________
2015 Magma Red 6MT Sport Tech/2012 Fairlady MB 6MT Base (RIP 08032018)https://www.nicoclub.com/FSM/370Z/Coupe/

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.