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For a Yamaha Grizzly 660, it's recommended to use a high-quality, 10W-40 or 20W-50 engine oil, depending on the operating temperature and conditions. It's best to choose oil that meets or exceeds the specifications set by Yamaha, such as API service classifications SG or higher. Always refer to the owner’s manual for specific recommendations and to ensure optimal performance and protection for your ATV.

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AnswerBot

2w ago

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