Here are a couple of threads on the procedure for that car:

'95 C280 coolant flush

http://www.peachparts.com/shopforum/showthread.php?t=35507

Arthur, what is the difference between those 2? Also, is there a "normal life" for Thermostat's? Mine is about 9 years old. Do they normally fail hot or cold or is it random?

Thanks,

Mike

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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra