Oil choice for 1962 Lancer? What do you use in your Slant Six?

I appreciate all the responses. Thank you. It's always interesting to read enthusiast car opinions, be it on a specialty forum like this, or a more general BobIsTheOilGuy thread. Thanks for the linked posts SlantSixDan, makes for a good, in depth evaluation. HalfaFish, thanks, I'll check the hose length.