Valvoline VR1 Racing Oil 20W50 contains needed Zinc and is readily available at Walmart. Brad Penn is another good oil available from performance shop or online.
If you don't drive a lot and your car sits with gas in it, look around for non-ethanol gas. It has a long sitting life (ethanol gas go bad in as short as 30 days!) Often available near farm or marinas.
Agreed. Rural counties tend to have it as well. I live at the southern tip of one such county. I'm 60 miles north of NYC and people come from the city or the surrounding counties that only have ethanol-laced gasoline. People also come from New Jersey to get our 91 octane ethanol-free.
I use VR1as well, got it at our local Autozone on sale.