[FredG]

Just watched an episode of hand built hot rods on motortrend and this was exactly the issue they ran into. Older Custom Corvette with a mushy brake pedal. Brake fluid with pink because the two were mixed. They wound up replacing the calipers after flushing out the brake lines with gallons of clean fluid. I do remember my old 66 Vette using silicone brake fluid. They reiterated that mixing the two was a big No-No.

Fred