The hose connection to feed fluid to the clutch master is up on the side
of the brake fluid reservoir. If the fluid level dropped below that
point then the leak is in the brake system. If it stopped at that level
then the leak is in the clutch system.

Mark

Don Hanson wrote:
>
> ....So I park the van, slightly head up, as I normally do, on my sloped
> drive, after coming in from a great day on the water,  a few days ago.   I
> take my other work van to work, two days the Vanagon sits
> still...again...this is not unusual...  Today I go to drive it and the
> clutch pedal goes down without any feel, no hydraulics there at all.
> Flacid!   Hmmm...I pop the instrument cowl and find the brake reservoir is
> very low...I add almost 3 dixie cups of brake fluid before it hits the
> "max" line.
>     There  is no trace of leaking that I could see, on the ground where I
> was parked......