C6 Clutch fluid replacement process
This was the starting point, I have no idea when or if this was ever changed. This car is a 2008 C6 Z06 with 72,000 miles on it. The dealership wanted $1200 to change it out. That seemed too much.
I found this method online and it seemed worth a try. I went online and bought a Thorstone 2L Vacuum Brake Bleeder Kit for about $50 here. I then purchased AC Delco 798696 GM Original Equipment 10-4086 DOT 4 Hydraulic Brake and Clutch Fluid - 16 oz for about $20 here I sucked it out and replaced it with new fluid shown here.
I replaced the cap and then worked the clutch pedal about 25 times nice and smooth, holding down on the floor for a second. This is the what it looked like after 1 flush.
I drained it again and refilled it here for the 2nd time.
I repeated the 25 clutch pedal pushes and this is what it now looked after the 2nd flushing.
I drained it again and refilled it here for the 3rd time.