Quote:
Originally Posted by san rensho
In addition, the stock thermostat begins to open at 86 C and is fully opened around 99 C, so the thermostat is partially opening and closing when the coolant is almost at the boiling pioint.
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Both the coolant additive (anti or whatever) and the fact that the system is pressurised increase the boiling point. If you cooling system is operating correctly, it will be a lot higher than 100 degrees C. Not sure how high, probably 115 to 120 degrees at a guess.
Personally, I'm not completely sold on the notion of the low temp stat. When the engine is getting properly hot, the stat is already wide open.
I can see how the stat would make the engine run even cooler when it would already be quite cool. But when in conditions where the engine would be running over 100 degrees / running high enough to trigger the fans (108 degrees in a 2.5), I can't see how a low temp stat is going to help.
Once you are over 100 degrees, both stats are wide open. Period.
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