I came up with this one today, and it worked like a charm. Go to the pharmacy and get one of those big water syringes for cleaning out earwax. Just pull the plug on the reservoir while the top is up, and slowly squirt in the brake fluid until you get a small overflow stream. Put the plug in, wipe the excess and then put the top up and down a few times to clear the air out of the lines. I wish I'd thought of it years ago.
