How often do you replace the thermostat?

[Satter]

Hello all. I’ve got 177k on my runner. But it’s now pushing 23 years of age? Should I have the thermostat replaced?

The radiator was replaced back in November because it had a crack in it. Dunno if they replaced the thermostat though.

 

[brillo_76]

Hello all. I’ve got 177k on my runner. But it’s now pushing 23 years of age? Should I have the thermostat replaced?



The radiator was replaced back in November because it had a crack in it. Dunno if they replaced the thermostat though.

I mostly replace the thermostat with the timing belts. I would change it if it's over 20 years old if you want to. They are very easy to change and get to.

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[JoeT4R]

I mostly replace the thermostat with the timing belts. I would change it if it's over 20 years old if you want to. They are very easy to change and get to.

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Agreed.
I've changed mine twice. Once when I did a drain and fill of my coolant about 5 years ago, then again when I had to replace my radiator about 2 years ago.

 

[calimobber]

Just changed with my timeing belt at 155k miles. At 255k now so i should do it eventually. Maybe just check the belt and decide then.

 

[phattyduck]

The thermostat is a good place to go OEM. And make sure the 'jiggle' valve is at 6 o'clock (upside down from almost every other engine out there).

-Charlie

 

[T4R2014]

They should be done every 100k I'd say, but pushing an original to 300k is not unrealistic if you are diligent with coolant changes.