Low Temp Thermostat whos using one?? Options

[95st-celica]

We'll i just picked up a 170 Degree low temp. thermostat for my 3s. I was wondering if anyone else was using one and how they liked it. I bought the Gates 170 Degree Thermostat, looks like a quality thermostat, hopefully i can put it in tomorrow, but i wanted to post up on here first and see who was using one and how they liked it. not just the 3sgte but the 5s, 7a, any motor.

[match220]

I used to have one in my 5s, the engine ran a little cool most of the day then would run very very cool in the mornings on the freeway, then I was telling my boss (a former NHRA pitcrew mechanic) about how much I liked it and how cool my engine was running. He said that it isn't good to have the engine run as cold as mine was running in the mornings, the gasoline needs to be a certain temperature to explode efficiently, the cooler it is the harder it is for the gas to vaporize, in carb'd cars it's more of a problem because there is nothing to spray the gas into a mist, so with our cars the injectors help, but injectors don't vaporize the gas as well when they are cool compared to when they are hot. So the gas mileage could go down a little bit if it runs excessively cool. I tried searching everywhere for some kind of documentation that tells the perfect temperature for gasoline to explode, I can't find anything, the only thing I found a lot of was how gas doesn't vaporize well when it's cool. So I can't tell you if a 170 degree thermo is bad, when compared to a 180. I've heard the 3sgte naturally runs hotter than other engines, so if you're running a little hot then I would put one in. But if yours runs as cold as mine was in the mornings (needle was 1/4 of the way from Cold) then I would put the stock one back in.