[Richard Hudgins]

Joe,

Any normal brake fluid should be ok.

There is no reason for the fluid to turn black in the clutch system.

If it turns black that means that the fluid is eating the "O" Rings in the TOB. NOT GOOD.

I would disassemble the TOB and check the "O" rings for degradation.

Of course you have the bloody thing bolted back together already, therefore I would just put in the fluid, bleed it, and drive it.

If it fails. fix it then.