[Fot] silicone brake fluid

[4everglades at comcast.net]

I have been using silicone brake fluid for ever it seems, in the race car and my street car. !0+ years on the same master cyl, calipers and rear wheel cyls.  This year I rebuilt my master cyl., front calipers and new rear wheel cyl. Please don't ask me why! Poor brakes by the end of one race. So I ordered a new master cyl.,which I recieved yesterday. Open the box and included is a note, " use of silicone fluid voids warranty". OK the question, are the newer seals not compatable with silicone?