[Spridgets] Clutch Fluid problem

[Paul Baker]

Last year I fitted new brake and clutch master cylinders and a new slave
cylinder on my sprite and used Castrol Response Super Dot 4 fluid in both
clutch and braking systems .  One year on the fluid in the Clutch m/c turned
dark grey and very thick and slave and m/c rubbers failed.  After a month with
new clutch master/slave cylinders the fluid is turning grey again.  The fluid
in the brake m/c is fine.  What's causing the fluid to change colour and go
thick, are the rubber seals disintegrating or the fluid oxidising the
castings?  And why the clutch system but not the brake system?

Your thoughts
would be much appreciated.

Paul

65 Sprite