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    160 to 140 Thermostat

    "I have a 2003 mercruiser 5.7 "I have a 2003 mercruiser 5.7 with a 160 thermostat that is raw water cooled. I seem to be running on the warm side (175 at idle, 185ish on plane). I just installed a 140 thermostat and I am now running 150 at idle and 165ish on plane. Does anyone know of an...
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