The Cummins Onan RV QG 4000 Generator has an oil change on it. Changing the oil every 100 hours is recommended by Onan RV. You will be good to go for the season if it takes 20 minutes. You will need a T30 torx bit, a 12mm sockets, an oil pan, a funnel, and 1.6 quarts of SAE30 or 15W-40 oil.
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