The car warms up (albeit slowly, local temps in the teens and twenties) while driving stop and go through town. The oddity occurs when I get on the highway and get up to 70-75 mph. My temperature gauge just plumets from the dead center correct local to the Blue "cold engine" marks.
Can anyone provide any insight. I first thougth I might have a "stuck open" theromstat, but that wouldn't explain the normal temp ranges for in city driving, or would it?
90 750iL 83K