Quote:
Originally Posted by pothole
And as far as I can tell, the reason to have the low temp stat is not reduce the temps at a constant cruise. It's to stop the coolant getting really, really hot. And it's not going to do that as both stats are full open long before the temps get really hot.
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The stat set the minimum or baseline coolant temperature the car is going to run at and return to when cooling off from a higher temp like when stuck in traffic. Because the stat consistently lowers the baseline temp of the coolant, it also lowers the oil temps as well, which is even more important.
As for why people don't see much movement in the dash gauge when using one, that is simply due to the grossly inaccurate and non linear nature of factory gauge, which is little more than an idiot light with a pointer.