Hi Terry:
I have silicone in the brake system of both my 43 F60S Light Anti Aircraft Tractor (LAAT) and my 41 GMC CCKW and am very happy with them. Unlike several other trucks in the collection they never need bleeding. Many other of our beasts need bleeding every few months and one is a downright fluid hog who needs a bleed every month. When it is rebuilt shortly, its getting silicone!
There are, however, many traps and pitfalls in switching over. I strongly recommend you do a search on this and other forums to get an idea of whats involved... basically you will be replacing most of the rubber parts of the system before you add the silicone.
Rob Love, who posts here frequently, is a very talented ex-military mechanic and enthusiast. He has vast experience with silicone brake fluid and can set you in the right direction.
Good luck!
Mike
