Klaus and Ozark, thanks for the tips on the coolant flush.
I tried to be careful on removing the T/stat screws .
One came out easy ,the other I stripped.
I saw the post about putting 2 nuts on the stub to extract the bolt.
Is that the best way, also how about using an easy out? Thanks.

A long time ago I tried to change myself and stripped the torx out because I couldn't get a solid fit on the bolt because the fuel lines were in the way. I took it to the dealer and let them deal with it.....If I tried it again I would spray the bolts for about a week with PB blaster and remove the fuel rail....

I got lucky doing mine, only one hard screw which slowly came loose. My T40 drive took a beating and needs to be replaced!
Easyout as the last resort. And be slow and careful, you don't want to hurt the housing.

Klaus
--
Volvoless. Sold the R. There is now a void...

If you can double nut it go that route - tighten both nuts together as tight as you can and then try to grab the lower nut with a wrench and ease it out. My experience with easy outs is that they are less than easy.

I still have a crater in my right calf from when I tried to drill out something for an easy out on the exhaust manifold or the head on an old International Scout that I had. The drill slipped and it felt so good as I drilled through my leg that I impulsively squeezed the trigger on the drill again.

...Lee