c172 maintenance

Hi guys I'm trying to find out which oil should I use for a 1957 Cessna 172 with a Continental O300, I've not being able to find specific info for this online or in the manual, the aircraft manual only talk about SAE50 recommended but it doesn't say much more (or I'm looking the wrong place) A...

Hi guys, I'm flying an old 1957 C172 with a continental O300 not too fancy and not many things installed on it, I'm still getting familiar to this aircraft. A couple days ago I flew at dusk for the first time with it, hence I used more current or power draw which ever way it should be called...