Coolant mixing question — can I top off with universal?
Rocketgirlygirl
1mo ago
163 3
2012 Chevrolet Cruze
My 2012 Chevy Cruze is slightly low on coolant. The reservoir has the orange Dexcool stuff. Can I just top it off with the green universal coolant from AutoZone or will that cause problems?
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1 Reply
DIY Mechanic1mo ago
DO NOT mix them. Dexcool (OAT) and traditional green (IAT) coolants use different corrosion inhibitor chemistry. Mixing them creates a gel that clogs your heater core and radiator passages. Either top off with Dexcool-compatible orange coolant or use distilled water as a temporary fix until you can get the right stuff.
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