I use DOT 5 Silicone in my 65 Barracuda and my 76 Warlock both spend time at 12,000 ft elavations. I would not use anything else in an older vehicle. Check Richard Erinberg's articles about disc brake conversions.
I have it in my 65 barracuda and 76 warlock it is fine. Bleeding can be a problem but can be done. It can trap air bubbles if shaken then bleeding is really tough.
I am with 340mopar on this, I served in the Army, Army National Guard, and usar total 30 years. We have to kill these people or they will kill us, liberals have thier head in the sand.