can i run my 1991 toyota pickup deluxe 4wd 4cyl with NO thermostat at all?
2 Answers
Not recommended. Sure, it will run fine, but can get too hot from coolant not staying in radiator long enough to cool, or vice-versa never warm up and lots of miles with a too-cool engine is not good. So bottom line, yes it's necessary, they put them in there for a reason
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