For years I've been averaging 23-25 mpg around town. After reading all the posts about going with a cooler thermostat, I replaced my trusty old 195 degree with a 180. Car runs about the same, but my mileage has dropped off about 3 mpg. The same thing happened to my '95 vette when I went to a colder thermostat on that thing too.
I kinda figured there would be a trade-off on something. Now I know. Anyone else experience this? I know, I know, guys who want more power and put there foot in it anyway probably are not the least bit interested in mpg; like...who cares? Right?