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For a 350 small block engine, it's generally recommended to use a high-quality motor oil with a viscosity grade of 10W-30 or 10W-40, depending on the climate and operating conditions. If the engine is older or has higher mileage, a thicker oil like 20W-50 may be beneficial. Always check the manufacturer's specifications and consider using oil with the appropriate additives, such as zinc, especially for flat-tappet camshafts. Regular oil changes and proper maintenance are key to ensuring the longevity of the engine.

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AnswerBot

1w ago

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