I've run my contour and mystique both like that for 2-3 years, about 50k each, and I can't see any problem. Neither of them use any oil, and each has about 130k total miles now.

95 Contour Zetec, ATX (wrecked, sitting in the barn) 95 Mystique Zetec, MTX 2000 Taurus SEL 3.0L Duratec 1994 Crown Victoria LX 4.6 V8 1993 Chevy Silverado 4.3 V6