New Onan 5500 gen - oil change and air filter questions

Note that the last of the two quarts of oil takes a long time to pour in.

In order to speed it up some, I fill the filter before I screw it on.

I also screw the dip stick back in and turn the engine over for a 10 seconds or so. This seems to pump some oil into the engine and speeds up the fill process for a while. I usually have to do that two or three times.

I used 30 weight oil in it for years but when I switched to Mobile One synthetic 10W30 oil in my 8.1L engine I started using it in the Onan also.