I just drained orange coolant from my '98, when it's wp failed at the end of May. Bought it used in 2000 at 38,000km and believe this was the first change.
Changed out the green coolant from my '97 mid-May when its wp failed.


98 Mystique LS v6 atx 110,000km
97 Contour LX v6 atx 125,000km
stock CD on LS, cass on LX
spoiler, tinted windows on LS only
4 wheel discs on LX only
All other available options on both