Onan oil capcity

Can someone tell me the approximate oil capacity for a 1975 model Onan 15 KW generator? It is on a 1975 45' Hatt Sportfish.


Thanks

Dan

It's about five quarts with a filter change. Be sure to use the appropriate weight and grade of oil..I don't remember what grade the spec calls for, but I buy straight 30 weight DD grade when I buy it for the main engines.

Thanks for the reply.