Originally Posted by
Egoracing
As to the problem, I would replace the master cylinders. Then get new unopened fluid and bleed the whole system out with the new stuff. If you topped it off with fluid that was in the shop you added water.
One of the mags did a test several years ago and found that if you open a bottle of fluid, break the seal, close it tight and put it on the shelf. At 40-60% humidity it only took a few weeks for it to absorbe enough moisture to create a dangerous condition by causing system failure when used.
I NEVER use fluid from an open bottle, it is to cheap to take a chance.