Lately the tour has been running 1 to 2 'letters' hotter on the NORMAL temp guage. For years it ran in the N-O range, but is now consistently in the R-M+ area. I flushed the radiator this weekend with basically no changes on the operating temps. The WP was replaced at about 60K miles, and the tstat is original. Has anyone had experience with a deteriorating tstat or maybe a flakey temp sensor or maybe the sending unit?
