Thermostat Question

Yup, i have a 180, got it at napa, runs cooler, takes longer to warm up. Doubt it's so cool that it's hurting anything.

Use the 180, strongly recommended.
I use a 180 in the winter, 160 in the summer.
(Texas)
Hint, you can turn the electric fan on by turning the defrost (full clockwise) on.

Rio96

StangClear said:

Is it worth it? I know there are a lot of guys installing the 180, but does it do any good? I even saw a 160 out there somewhere, can't remember where though. I heard lowering the engine temp decreased the performance because they were designed to run at spec temps from Ford. So anybody notice any difference?

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No it isn't worth it. First of all, unless you have the ability to reprogram the fans, the engine temp will still creep up to around 220. Second, I installed a 160 degree thermostat and reprogrammed the fans so the engine temp stayed at 160. I noticed no increase in power, mileage dropped off slightly, my car passed its smog check this way, and if I didn't live in a desert climate there would have been an accumulation of condensation in the oil pan. Steeda sells a 180 degree thermostat for the 4.6, but unless you are having overheating problems, I wouldn't do it. Good luck.