[BJGreen]

Silicone brake fluid is very popular with vintage Corvette owners becasue it does not harm paint and does not absorb water, which could damage valuable original equipment brake system parts. It is also useful for cars in collections which are not driven. It is not recommended for much else.

This quoted from the Wilwood web site:
"Wilwood does not recommend using DOT 5 fluid in any racing applications. DOT 5 fluid is not hygroscopic, so as moisture enters the system, it is not absorbed by the fluid, and results in beads of moisture moving through the brake line, collecting in the calipers. It is not uncommon to have caliper temperatures exceed 200° F, and at 212° F, this collected moisture will boil causing vapor lock and system failure. Additionally, DOT 5 fluid is highly compressible due to aeration and foaming under normal braking conditions, providing a spongy brake feel. DOT 5 fluid is best suited for show car applications where its anti-corrosion and paint friendly characteristics are important. "