Tip & How-To about Dodge Ram 1500
Contaminated coolant contributes to engine damage by clogging up the radiator, reducing efficiency of the coolant to remove engine heat. an uncapped overflow tank is a route for debris and contaminents to enter your cooling system and if ignored, circulate crud thoughout the system and clog your radiator. So if you have lost your coolant cap,(which is easy to do) dont just say "oh, well" there is a temporary fix that will keep your coolant clean until you can get to an auto parts store and replace your cap with the proper cap. all you will need is a plastic bottle, or container cap and some electric tape, or, yes, even duct tape. eyeball the approximate inside diameter of the radiator overflow tank fill hole. place the bottle cap over the fill hole, but dont let go of the cap. if the cap is smaller than the hole wrap electrical, or duct tape around the cap a few times and replace bottle cap over the fill hole. the cap should fit snug in the fill hole. make sure you dont press cap into the fill hole too deep that you cant pull it out with your fingers. if you do you can pull it out with needle nose pliers. this will keep your coolant clean until you can get to an auto parts store and replace the cap with a proper cap.
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Thermostat Operation:The automotive thermostat is a temperature controlled on and off valve. When the temperature rises to a predetermined temperature, the thermostat opens up to allow the engine coolant to flow through the cylinder block and the radiator. This flow is crucial to maintain optimum operating temperature for fuel efficiency, enhanced driveability, and engine protection. The coolant flow is reduced when the engine is cold, and the flow is increased when the engine is hot. Contrary to popular opinion, operating the vehicle without the thermostat doesn't make the engine run cooler. It will actually run hotter because there isn't a thermostat to slow the coolant flow. This means the coolant doesn't stay in the radiator long enough to dissipate its heat.
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