Retraite,
I have an Onan Microlite 2800 as I think the op also has due to the fact that it's a model rv similar to mine and also similar vintage. With that said, you got me to thinking about the oil fill level that you state should be up to the oil fill hole(or something like that). So I checked my owner's manual about the correct oil level necessary. The manual says essentially that after the oil is drained from the crankcase, one quart of oil should be added and to check that level with a cleaned dip stick that is inserted back into the fill hole but not screwed in. The proper level is between the "full" and "add" marks. I think if the crankcase was filled to the top of the fill hole it would read way past full wouldn't it?
What part of the manual states that the oil level should be where you've stated? I couldn't find it? Is that true maybe for a 2500 model?
