Recently purchased a 2.5 DSE and noticed that the brake fluid level was above the max. Drained off about 200ml excess to maximum on reservoir. Started engine and noticed that level had gone down to below the minimum. Put back exactly what had been siphoned off, but level only returned to minimum. Took car for drive on quiet country road to test and no problem with brakes. Before I touched the fluid the brake pedal felt very high, in that there was little travel between no brakes and stopping on a sixpence. Now the brakes feel much more progressive. Can't see any obvious signs of a leak, just puzzled as to why the fluid didn't return to previous level. Car is going for full service this week.