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What happens to a motor if you mix two different antifreeze coolants in the engine?

Mixing different types of antifreeze in an engine can be very detrimental and lead to serious damage. Here's why:

* Incompatible Chemistry: Different antifreeze types have different chemical compositions. Mixing them can cause reactions that lead to:

* Precipitates: Solids forming within the coolant system, blocking flow and overheating the engine.

* Gel Formation: The coolant turning into a thick, gel-like substance, hindering proper cooling and potentially leading to engine failure.

* Corrosion: The chemicals in incompatible antifreeze can corrode the engine's internal components, leading to leaks and costly repairs.

* Reduced Protection: The combined mixture might not provide the same level of protection against freezing, boiling, or corrosion as the original coolant.

* Voiding Warranty: Mixing incompatible antifreeze can void the warranty on your vehicle.

Here's what you should do:

* Always consult your vehicle's owner's manual. It will specify the recommended type of antifreeze for your engine.

* If you're unsure, get professional advice from a mechanic. They can help you determine the correct type of antifreeze for your vehicle and ensure it's properly added.

* Never mix different types of antifreeze. If you're unsure about the type of coolant in your vehicle, it's best to completely drain and flush the system before adding new coolant.

Remember: Antifreeze is a vital component of your vehicle's cooling system. Properly maintaining it can help prevent costly repairs and ensure the longevity of your engine.