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Old 08-30-2013
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Re: How hot does your diesel run?

both raw water and recirculated water cooled engine run at the same internal temperature
they both burn diesel. the metals used are the same and the oil is the same. in fact they are the same engines. the reason they run a lower temp thermostat in the raw water cooled engines is because the thermostat needs to open and start letting in raw water at a lower temp so the metals will not be allowed to heat up to high and then get shock cooled by the cold raw water. on a 2GMF the thermo is set to start opening at 159 and full open at 185 degrees F. the raw water models use a 108 to 125 degree F thermostat
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