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Crud in Clutch Master Cylinder

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Old Jan 29, 2026 | 02:47 AM
  #1  
rebel674's Avatar
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From: Yokosuka, Japan
Crud in Clutch Master Cylinder

Hey all, this past summer I was experiencing weird, wandering engagement with my clutch. Popped open my master cylinder reservoir (the 5/6 do not have a shared reservoir with the brakes), saw that it was full of black crud, bled the clutch, and all was aces. Completely remedied my engagement issues.

Unfortunately the wandering engagement has returned recently, and lo and behold I popped open my master cylinder reservoir and it is once again full of black crud. Should I try just replacing the lines or should I just go ahead and replace the whole system (master/slave/lines)?

Does anyone have a useful guide or instructions for this process? Does the clutch system need to be bench bled when replaced from dry or is it install, bleed, and go?
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Old Jan 29, 2026 | 12:13 PM
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From: Houston
do you have a rubber hose you can maybe upgrade to some ptfe/braided line
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Old Jan 30, 2026 | 03:22 AM
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From: Yokosuka, Japan
Originally Posted by ViciousLSD
do you have a rubber hose you can maybe upgrade to some ptfe/braided line
I have heard that braided clutch lines don't do much, but will probably spring for one anyway as there's no harm and they're not too much more expensive than the oem hose
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