The amount of oil you need to put into the EU2000i’s crankcase is.42 quarts. If the owner’s manual says to use 10W30 then use that oil type. It may not be the best for your altitude or temperature levels but it is what the manufacturer says to use.

The Honda EU2000i has an oil capacity of.42 quarts. Bring the oil level to the upper limit of the oil fill tube neck. When the oil begins to run out, the oil level is correct.