Cant think that another fluid change, sticking slave cylinders or new brake pads are going to affect the pedal going to the floor.My money would be on poor seals in the master cylinder, allowing fluid to flow by the operating piston when under pressure.
Think again....OP said it does it when hot but not when cold. Dodgy seals in the master cylinder would not be heat related
Arwyn
Maybe scraping the barrel, but I was thinking fluid getting thinner and seals getting a bit floppy with heat.If the car has been (properly) serviced as noted, then one might expect working of slaves and callipers would have been inspected as a routine.
Be interesting to hear the outcome.
