Billy,
A 2-53 is supposedly good at 12-15 kw, Timothy at Leids will figure out what I need.
Mom and Dad's 4-53 is 45 KW
If the generator you have stopped for a low oil level alarm then figure out why (if more than just neglect) and it'll be good to go, if it stopped for a low oil pressure you might want to do some more investigating, check bearings, oil pump, relief valve, and that sort of thing. Or take chances and see if it runs and holds oil pressure now.
Grigg