Synthetic brake fluid???

I have used DOT 5 silicone brake fluid in all my non-ABS cars for 20 years, without a hint of rust. Most claims against it are bizarre and unfounded. The best defense is that the U.S. military uses it. When I first bought it, the auto parts guy said "you must get every trace of old brake fluid out or bad things will happen". Total bunk. The only problem with leaving old DOT 3 (glycol) fluid is that will leave spots that might rust and not get the benefit of silicone. I have always done the change when replacing wheel cylinders and hoses, and after flushing the tubes. The one downside is that silicone has a slightly lower boiling point than brand new glycol fluid. That is why road racers use glycol. In practice, glycol fluid soon absorbs moisture, resulting in a lower boiling point, so the regular driver is better with silicone.