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Aftermarket thermostats

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Carfax83

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A lot of auto enthusiasts recommend installing an aftermarket thermostat as one of the first upgrades you should do, but is it worth it, and more importantly, is it safe for the engine?

I'm really thinking about getting one, as they're not that expensive.

Specifically, this is the one that Dodge charger owners recommend the most.

After installation, lowering the fan settings with a tuner becomes necessary to take full advantage of the thermostat..

So anyone running one of these in their vehicles, or have thoughts on the matter?
 
Going in the other direction, a high temp thermostat can provide measurable improvements in gas mileage. I'd say go for it, you can always take it back out.
 
Yuriman said:
Going in the other direction, a high temp thermostat can provide measurable improvements in gas mileage. I'd say go for it, you can always take it back out.
Click to expand...

Really? So does that mean a low temp one like the one I plan on getting can decrease gas mileage?
 
Carfax83 said:
Really? So does that mean a low temp one like the one I plan on getting can decrease gas mileage?
Click to expand...

They do, marginally. But so does installing a cold air intake or using higher lift cams to move the peak torque higher up the RPM band. Most mods that increase power also decrease economy, though there are some exceptions.

A turbo is one example of an exception - it increases the effective compression ratio so you get more energy out of each unit of fuel you burn.
 
waste of money.

your car will likely run at a set temp regardless of when the thermostat opens. so for example if your car runs at 180 degress, what difference does it make if your thermstat opens at 150 or 170 degrees? It only means the stat will open earlier, but won't do anything to keep peak temps down.

heck, dynos show cars running at full operating temps make more power.
 
I wouldn't bother. What if the aftermarket part breaks and the engine overheats? I'd rather the maker of the car be on the hook for it, not an aftermarket parts company.
 
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