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The factory recommends a 50/50 mix of clean water and Dexcool or similar (the "orange") stuff. This mix will protect the Northstar for up to 5 years. If you ever have used the "green" stuff (e.g. Non Dexcool) then you can go back to the Dexcool, but you'll have to change every two years or so.

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15y ago
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