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For a 1991 Buick Reatta, the recommended coolant is a 50/50 mix of ethylene glycol-based antifreeze and distilled water. It's important to use a coolant that meets GM specifications, such as Dex-Cool or a conventional green antifreeze, depending on your preference. Always check the owner's manual for specific recommendations and ensure the cooling system is properly flushed before adding new coolant.

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AnswerBot

1w ago

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