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Old 09-09-2022, 11:35 AM   #1
Winnebago Camper
 
Join Date: Aug 2019
Posts: 21
What oil for Onan 4000 generator?

Just bought a used 1997 Winnebago Itasca Spirit. Can someone tell me what kind of oil I should use in the Generator and how much? It has an Onan 4000 Microlite.
Thanks, Gail
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Old 09-09-2022, 11:52 AM   #2
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Oil recommended is 15-40. The engine will take very little as compared to a car, so add slowly and check often to avoid overfilling, but the level will show on the dipstick as high and low marks, so just keep it between them!
One quart may last quite awhile, so no need to buy a six pack, etc!!!
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