hope im putting this in the right spot guys my first post anyhow i need some serious help working on my grandpops oldsmobile i need to drain the oil in it and it has a funky star pattern i have to say i have never ssen this before so what do i use to unsccrew it ? im really stumped any help whould be great plz help if u can !!! great site its a recesed pattern that goes

 

Use a 1/2" drive ratchet with no socket on it it works fine.