Quote Originally Posted by Fiery254 View Post
Without sounding a smarty pants I really would refer to the manufacturers websites. If they don't give an answer then get in contact with their tech support. Brakes aren'ty something we want to be second guessing about.

I recently started using 5.1, although I was rebuilding my calipers and installing a new master, new reservoir and fitting new braided lines at the same time so really didn't have to worry.
This is good advice, I heard the same thing about seals. Probably means you need to do some research on your parts.

Or you can just forget you posted this thread and fill the brake system with dish soap.