Wow, by your description it sounds like you're missing a few ball bearings (not a big deal) and you have no grease/oil (more of a problem).
I'm not familiar with Suntour at all. But if it's anything like Shimano, if you take it apart you HAVE to use grease to reassemble there's no other way to reassemble without losing ball bearings (IME). If you Dont want to take it apart (and you want to lube it) you HAVE to use oil as there's no other way to lube it (IME). A medium viscosity oil the consistency of Phils tenacious oil is best if you go that route. If you go the the taking apart route, use only enough grease to hold bearings in place and it'll be fine.