Thanks for your answers folks. Now I have to check which nipples are on the thermostat and water pump housings.
I put my 4 thermostats in a pot on the stove to see how they are operating. I think the old bellows type has higher flow rate. Two 180° modern type are fairly consistent opening and closing. One 160° likes to open early and close late. Not going to use that one.
I live in a small southern Ontario town. Our summers are moderate. No traffic to cause problems and I don’t drive the truck when it’s blazing hot and no A/C. Probably need heat on more spring and fall days. Rad seems to be in OK shape. So 180° thermostat is probably a good spec for me.
When God gives any man wealth and possessions, and enables him to enjoy them, to accept his lot and be happy in his work�this is a gift of God. He seldom reflects on the days of his life, because God keeps him occupied with gladness of heart. Ecclesiastes 5:19-20
