What Type of Oil Do You Put in a Generac Generator?


Quick Answer

The oil for a Generac generator is either SAE 30, 10W-30 or 5W-30, depending on the temperature. It is important to change the oil after the initial eight hours of operation, and then every 200 hours following the first oil change.

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Full Answer

If the temperature is above 40 degrees Fahrenheit, use the SAE 30 in a Generac generator. If the temperature is cooler than that, all the way down to 10 F, it is necessary to use the 10W-30 oil in the generator. In sub-freezing temperatures below 10 F, use a synthetic 5W-30. It is important to use the generator outdoors and never start it indoors, even if the temperature is cold.

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