Stop in for a cup of coffee

I have read about the silicone brake fluid, always read about flushing, but never read about reactions if dot 3 was present. And never a mention of using in a 100% new system only.

i do know power steering fluid destroys a brake system in very short order...guy says brake line leaks, and there is a couple litres in back seat. He was filling it with p/s fluid. What a mess.