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You should use a 30-weight motor oil, NOT a multi-grade such as 10-W-40. Use of multi-grade oil will increase your oil consumption considerably.

Check your owners manual, nearly all Briggs engines made in the last 10 years recommend a multi-viscosity oil, namely 10w30. However, if not used below 40 degree temperature's, 30w detergent oil is fine as it is shear stable (will not degrade to a 20w under high heat).

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13y ago

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