Leaky master cylinder

rrvolare said

This is more common than you think on these masters ... i had the same issue ... i lowered fluid slightly and replaced cap and resolved my issue ...

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These should not leak under ANY condition. They should be a perfect seal. If they leak, as mentioned, it's likely rust/ roughness or a warped cover or poor gasket. "Modern" problems, IE Chineseo, cheap third world rebuilts, etc.................