you're welcome. I have never done the oil change myself, just read about it... I've used eaton blowers several times now in aftermarkets apps, but never owned the Eaton receiving vehicle long enough to worry about it...
Mag has a bit of info on their website about rebuild and service kits. Perhaps a a quick phone call to them is in order for info above beyond what little info we have here....
Let us know what you find out
Best,
Phil