Welcome...Lots of x-rental owners here. Most are pleased IMO and I also thought oil weight was a typo at first. After doing a lot of reading I only use Ford products for oil, and filters. Especially the oil filter with silicon valve. Also I notice a lot of RV owners no matter where bought use "normal" maint service schedule. I use the "towing" schedule as RV's have a lot of weight to pull around.
Here is link to service schedule you can use.
http://www.fleet.ford.com/maintenance/owner-manuals/And of course some things I shorten up the schedule on, example...spark plugs for instance, every 99,000 mile is a joke IMO.
My only big surprise was using Seafoam to clean out fuel system. Cleaned it out alright, had to un-gum fuel injectors after breaking stuff loose got caught in them.