I recall an old mech illustrated where Castrol were approached by Ford for a lifetime fill for their 25,000 mile disposable car concept...what oil would last 25,000 miles in a disposable car. Said Castrol..."our oil, if you are throwing it out at 25,000 miles, then that's what you get".
Mobil, years ago showed that M1 had "40,000 km protection", by driving an M1 filled commodore from Sydney to Perth and back, etc. All in one consecutive trip (Super Drop, IIRC did 20,000km).
Talking to Mobil Techs around 10 years ago about my RV-6 4Runner, about how long I could run M1 (specifically 0W-40).
Once through the warranty discussion, they admitted 12 months, whether it was 5,000km, or 40,000km (25,000 miles)
Do your miles quick enough, and it's achievable.