Proper temperature range

1975 JEEP CJ5
89,000 MILES • 4.2L • 6 CYL • 4WD • MANUAL
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SPITNHIT
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What are your thoughts on temperature rating for a thermostat in my vehicle?
Through Internet research, it seems the 258ci (4.2L) should run between 190-210*. Should I run a 180* thermostat?
Jun 24, 2016 at 3:45 PM
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CJ MEDEVAC
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The AMC Service Manual says to use a 195 degree stat

I have done that all along (since 1981- 6 CJ-5s) No problems!

I have been doing this for a long time too, look at the end of

https://www.2carpros.com/questions/1989-jeep-other-challlenge-engine-overheating-rapidly-fluctuation-temperature-l/page/2

The 195 gives your heater/ defrost more heat, I have the OEM heater and my own "Sahara Breeze" (uses cooling system water too), two heaters are better than one and temperature is important!)

The Medic
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Jun 24, 2016 at 4:30 PM