Quote:

"It will run the temp it wants to run if that temp is above the stat rating" when you actually mean that if it has an inadequate cooling system, a thermostat cannot make it run cooler. Kim


No I don't mean that! I mean that if that engine want to or has a tendancy to over heat don't be too quick to blame the stat. The only way a stat can cause an engine to over heat or run above the stat rating is if it is faulty. Something else is causing the problem like you say inadaquate cooling system for one reason or another being gunked up cooling passages in the engine or radiator core, bugs and dirt in the radiator fins blocking air flow, etc. or in a modified engine just plain flat not enough cooling system but it won't be the stat causing it.