I have been experiencing a fluctuation in my temperature gauge lately. The car gets warmed up to about 3 points below midrange on the temperature gauge as usual then once I get on the highway the gauge drops a couple of points. This only seems to happen first thing in the morning. I’m thinking it has to do with the cold weather we have been having lately but I’m not sure. Has anyone else experienced this issue? Should I be concerned?

Yup - check this thread SLOOOOOW warmup in cold weather (http://www.rx8club.com/showthread.php?s=&threadid=14021&highlight=warmup)

There was also another thread since that one where akrx8 in Alaska wrote more detail about the same problem...

Regards,
Gordon