Silicone Brake Fluid
When I switched my Barracuda over to front disc brakes over a year ago I also switched to silicone fluid.
I DID NOT change everything. I only changed a few lines, the master cylinder and the front setup to disc. I bled the system a lot, maybe wasting 2 bottles of the stuff, just to be sure it was all clean.
I've been told you have to change all your rubber parts and hoses etc.etc. I think that's BS. I didn't change any of that, just bled the system a lot like I said.
My system has been fine since and my brakes work fine, no problems.