Hi all. Today I received thermostat, thermostat gasket, and thermoswitch from subaruparts. Since my friend is out in a vacation, I decided to work by myself again. Took some time to look through FSM and Haynes repair book on replacing thermostat section. I decided to replace the thermoswitch first. Un-hooked the top hose from the radiator, then unscrewed the bolts that holds radiator from the body. With out draining its coolant, I tilt one side of the radiator toward driver side so I can reach down and replace the thermoswitch. Everything went smooth untill when I tried to unscrew the bolt that holds thermostat cover. I got about one and half turn and it wouldnt go further. I know if I force it I might break the bolt so I just there. screw back one and half turn and left. Of course I tried to some oil to loosen the bolt but that wouldnt work either. I need some advice how to un-screw that bolt out. What kind of tool I need or some kind of know-how skill.

Thanks

Dan

Try truning the bolt back and forth, that will get it to free up most of the time