Stuck thermostat bolts
3 Answers
Have you tried spraying it down with some diesel fuel? Let it sit overnight.
beatupchevy answered about a year ago
If you repeatedly apply torque and back off or go back and forth with the bolt it creates stress on the binding threads and can eventually come lose , you have to go easy . One other option is the hot wrench , they sell an O2 - MAPP gas combo torch set that can get things red hot . But in your case I'm thinking there's not much room and the flame will snuff out . Many times just a little heat does the trick ..
I think that all us old guys have done this in the past; sorry GA and BUC, I know you're a bit younger than me..... I've used hot-cold effectively, and I've preceded this with Diesel/Kerosene or Liquid Wrench, then apply the tighten/loosen carefully. Always worked for me.