Ok, changed my oil today in my car that had around 2K miles on 0-20W Mobil 1. Had about 12 months on oil. Even though it was nowhere near 5 or 7500K miles it had 11 months of stop/go short trips which IMO is the extreme driving conditions. I have VVT engine which has small passages for pressurized oil to operate the VVT. That’s reason I changed oil cause I don’t want any slug buildup on my VVT or piston rings. If I had turbo engine I doubt I’d let oil longer than 6 to 8 months regardless of miles or dash percentage indication (which in my case read 75% oil life left.
I’ll reference other opinion on subject. Bottom line if you expect to keep vehicle more than 3 or 4 years oil change intervals IMO need keep eye on. Or you could end up with engine rattle on startup. The sound of death at door steps IMO.
How Long Does Oil Last in a Car Not Driven? | Strickland Brothers 10 Minute Oil Change.