brake fluid

As an ASE certefied brake guy I like silicone. If only because it doesn't gather contaminants. All modern manufacturers recommend you replace DOT3 every 2 years because it will gather moisture (hence the reason the bottle says don't leave around opened) and contaminants and break down (no pun intended.) I've had customers come into the shops I've worked at with almost no pedal but the brakes are good. They've boiled off the moisture on the monster hills here in the Finger Lakes area of New York (7-12% grades) and had complete brake fade. After a cool down, the brakes come back and after replacing the fluid they're on their way. (What would really help is if they learned to frickin' drive on the frickin' hills, but I digress...)
Around here it's an almost given on Mopars of all years with disk/drum set up that if you replace the front pads you're also going to replace the rear wheel cylinders. Silicone keeps that from happening. So chalk up another for silicone.