I just purchased a 2000 GTP Daytona Pace Car. I power flushed my trans because I didn't like the color of the fluid,very light tan. The car has 99,540 miles on it. The flush place told me that they don't like to flush cars with over 100,000 miles and that I just made it. I have put 280 miles on it since the flush with out any problems. I have a 1980 Lincoln that I flushed because the fluid was brown when I got it. Also, it would feel like when it warmed up it wouldn't shift as firm as when it was cold. After the fluid change the shifts remained firm. I believe the old fluid couldn't handle the heat properly. I haven't had any trouble with it.