[Dave at Pelican Parts]

The only time you ever need to use the lower bleeder valves is when you are flushing the brake system--getting all of the old fluid out, and putting all new fluid in. If you simply [b]bleed[\b] the bottom valve, you will never get any air out. There are several people on the Rennlist 914 list that have experienced that.

Brakes should be flushed at least every other year. More often is fine, but isn't generally needed unless you put your car on the track. In which case, new brake fluid for every event weekend is a Very Good Idea.

--DD