When to Change Coolant? Before It Ruins Your Engine! - NAPA …
https://knowhow.napaonline.com/when-to-change-coolant-before-it-ruins-your-engine/
Web ResultDec 27, 2018 · One way to ensure your engine is well-protected is to change the coolant according to the schedule. However, that could be misleading, causing you to change too soon or too late. A quick coolant checkup, using an antifreeze tester , on a regular basis can tell you if your engine coolant is depleted of additives.
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