Be very careful! I used silicon fluid in an MG Midget I used to own and it was really good so when I got the P6, after fully rebuilding the brake system with new seals, I used it again. It made all the rubber seals swell and the brakes started to drag and the pedal went very strange. The fluid will attack rubber if it is not the right type and cause all sorts of issues. I also read that because it doesn't absorb moisture, that any moisture that may be in your braking system from condensation in the flued reservoir for example, could cause further corrosion. I decided that there was no real good reason to bother with it. normal fluid is cheap and readily available and of your braking system is in good condition, there is little maintenance needed apart from the occasional bleeding and fluid change. It certainly caused me a lot of cost and trouble!