I bet you will not find anything about oiling your machine because officially it doesn't need it.
Don't know much about the Horizon but I have a Janome 6600 and I've been told that I should
never oil this machine...self lubricating and all that. Well, I still put a drop of oil once in a while.
Just one drop. I know it needs that drop of oil when it starts making a funny noise. I also note
the date when I put the oil so I don't overdo it. I put a drop of oil in the wick and nowhere else.
Wait and see what the Horizon owners have to say.