Coolant and thermostat
08-31-2023, (Subject: Coolant and thermostat ) 
Post: #1
Coolant and thermostat
How often do you all drain and replace your coolant and thermostat on these newer motors? Mine had been in about 7yrs, and 300,000miles so I thought I should change it. I run the OAT extended life coolant and change the filter every other oil change or about every 30,000 miles on a demandated CM2250.
So I pulled it apart the thermostat and housing and seals looked like new, and the coolant bottle says good for 1,000,000 miles or 20,000hrs.. I kind of feel foolish for changing it and replacing the thermostat and seals?? What do you think?? Necessary? Or not??
It is kind of a pain in the ass on a Volvo/cummins setup as you have to unbolt the air cond compressor and a bunch of other crap to get to it.


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Coolant and thermostat - JMBT - 08-31-2023



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