I'd use the oil and filters I use now — Mobil 1 5W30 and Wixes/Napa Golds. I'd change both when the oil-life monitor (set up for conventional oil, according to GM Canada) suggests it, as I do now.
The car (see below) is pushing 220,000 kms/136,700 miles, doesn't burn or drip oil (never did) and gets the same mileage it did when I bought it in 2010 with ~42,000 kms/~26,000 miles on it — the best at 65 km/h or 40 mph to 80 km/h or 49 mph when it returns 45 to 47 mpg imperial. (When I switch the dash readouts to so-called English, the speedo and odometer change to miles, but the mpg is in U.S. gallons, which mean as much to me — not much — as litres per 100 kilometres.)
Would or could any other oil preserve the engine any better? I doubt it.
But if cost was really no object, I'd have a matter transmitter — with a lifetime warranty on the Heisenberg compensators — and live on Risa.