Metairie Auto Repair

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Monthly Archives: April 2019

How Do Radiators Fail and When Should They Be Changed?

How Do Radiators Fail and When Should They Be Changed?

Your radiator is responsible for removing heat from your engines coolant to help keep your engine cool. A leak free cooling system and a properly functioning radiator is key to the reliability and longevity of your vehicle. When engines get hot or “over heat” internal engine damage can occur. In years past radiators were constructed from brass or aluminum fins and soldered on to brass or aluminum tanks. Today most modern vehicles have aluminum fins which are crimped on to plastic tanks. The most common areas for failure on modern radiators is either where the plastic tank seals to the aluminum fins, or the plastic tank itself. Cooling systems are also subject to pressure, most cooling systems operate between 13 and 16 psi. Plastic tanks heat and cool at a different rate than the aluminum core. Over time the heating and pressure created from the heat, and the pressure relief from cooling wear the plastic on the tanks of the radiator. We find that over time the black plastic ... read more


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