[argiopeweb]

Ooh, hadn't thought of fluorescent dye. I know the local places have it for A/C systems. I'll look around and see if I can find it in a non-pressurized form.

Definitely not the clutch system, sjv. For one thing, the master and slave are new, but, even if they weren't, they can only drain the system down to the level of the line from the canister to the clutch master. This consistently drains much lower, and refilling the system fixes the problem without a clutch bleed. Leakage this dramatic in the clutch would definitely leave air behind.