SILICONE brake fluid is NOT COMPATABLE with normal brake fluid. To convert to silicone fluid it is common practice to remove and strip the complete hydraulic braking system, I mean every thing- master cylinder, calipers, wheel cylinders(drum brake), abs pump(if fitted), load sensing/proportioning valves etc. Everything is then striped and thoroughly cleaned all the seals, cups, rubbers are recommended to be replaced and the components reassembled. Then you need to flush out all the lines/hoses with a recommended brake cleaner. After all this you can refit your brakes, fill the system with fluid and bleed the system. This entire proceedure is the recommended normal practice when changing either to or from silicone brake fluid. Do you think all this effort is worth it? NOT!! This is why DOT 5.1 brake fluid came about. It is compatible, it is HIGH TEMP normal fluid.