I have to disagree on the rubbing alcohol unless the system is disassembled and you can be sure everything is dry. Problem is the water content of most rubbing alcohol is 30%, and brake fluid absorbs water. That's why denatured alcohol is recommended. While not completely water-free, I'm thinking its water content is less than 2%. I agree with the brake fluid flush. And don't save a can of fluid with just a smidgen in the bottom. It will absorb water. I buy a new quart of DOT3 for a flush, and save the leftovers for paint stripper on model trains.
