rlmeskimen
Registered User
This is kind or a shallow question but I just replaced my thermostat with a 180. Driving on the hwy at 70-80 it hovers around the M in the NORM. Anyway, as many thermostats as I have changed over the years I have never tested one. I put the 197 thermostat in a pot of boiling water for about 20 minutes...it only opened up about 1/8 of an inch. I would have thought it would have opened more. Anybody have any thoughts? Could this have been my problem? There is a little buildup in the radiator and I plan on replacing it in the spring (the car is going back to Nashville in a month, cool weather).