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Originally Posted by san rensho
Ok, I'll try. Low temp thermostat just delays car getting to operating temp, which prevents burn off of condensation in the crankcase. Water, according to LN engineering's website, drastically reduces IMS bearing life. But at the same time, since they make the low temp thermostat, they also say that lower operating temps prolong IMS life. So I don't know. Do a search, its been hotly debated before.
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Actually, that is not true. Any given engine and cooling system set up is going to heat up at the same rate, regardless of the temperature the thermostat opens at; the only thing that changes is when the coolant begins to circulate, and the "steady state" temp the engine coolant ultimately reaches.
As for burning off water of fuel contamination in the oil, an engine with the 160 degree stat gets the oil more than hot enough to take care of that. Literally dozens of before and after UoA's show no change in the level of contamination in the oil, but at the same time show the oil is holding up better with the lower temp stat......
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