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Fact or Fiction: Operating at low coolant temperature should be avoided

This is a Fact. In extremely cold weather, extended idle times or not using a grill cover may prevent the engine coolant temperature from coming up to the correct operation temperature.  Continual operation at engine coolant temperatures below 140 degrees Fahrenheit can be harmful to your Cummins Turbo Diesel engine. Low engine coolant temperatures can cause incomplete combustion which allows carbon and varnish to form on piston rings and injector nozzles. It also allows unburned fuel to enter the crankcase which dilutes the lubricating oil and can increase the wear of internal components. So in extremely cold weather keep an eye on your coolant temp gauge and take care of your Cummins Turbo Diesel by running at the optimal coolant temperature.

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