The oil is filled from the top of the engine thru the valve cover. For a MH, there will be a long extension tube attached to where the same engine is in a regular pickup truck where you open the hood and there it is..
So, the cap will just be stuck in a spot that won't really let you add any additional oil... It's not going to get stuck in the pan, or even the top of the head...
There would have to be a way to pull the 'tube' off and then clear it out.
It also ain't gonna get into the oil pan... The dip stick goes to the oil pan, but not the oil fill tube... gee wizz..
Anyway, decide if you are going to do it yourself, or take it in to a shop... You can run the engine!! It's just going to have the oil in the pan it already has... You just won't be able to fill it very well until you get rid of the blockage.. :)
Good luck! Mitch
