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Old 06-24-2020, 02:08 PM #1
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How often do you replace the thermostat?

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.
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Old 06-24-2020, 02:24 PM #2
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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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Old 06-24-2020, 02:33 PM #3
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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.
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Old 06-24-2020, 04:30 PM #4
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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.
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Old 06-24-2020, 05:11 PM #5
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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).

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Old 06-24-2020, 06:03 PM #6
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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.
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