How To Check Your Antifreeze (DIY) | Family Handyman
https://www.familyhandyman.com/project/how-to-check-antifreeze/
WEBJan 20, 2022 · Whether you buy pre-diluted antifreeze or mix it yourself, letting coolant get too low or too old means your engine could quickly overheat and become severely damaged. That's why checking the antifreeze at least twice a year, and topping off or changing it, if needed, is crucial.
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