Four Wheel Logic

Can I Mix Green Antifreeze With Red? | Coolant Mixing Risks

No, mixing green and red coolant in one system can create sludge, weaken corrosion protection, and shorten water-pump and heater-core life. Coolant color looks simple on the shelf, but inside an engine it links to chemistry, service life, and how well metal parts stay protected. Green and red antifreeze blends usually use different inhibitor packages,

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