This fluid is the way to go if you want to protect your paint on your car. regular brake fluid destroys paint! Silicone fluid is not hydroscopic, absorbs moisture from the air, so water is not a problem of pitting your master cylinder or brake shoe cylinders. Sold in by the quart. I use it in my collector cars with no problems. Do not use where the fluid get real hot like competition or mountainous terrain environment.
Brake Fluid - Silicone