Perhaps its just the calibration of your particular sending unit/temp gauge combination.
One of my cars runs on 'O' the other on 'R'.

Has it always run on this position?


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