This is such a good point - in every disaster / zombie movie they somehow have gasoline to run cars but no electricity, when in reality it would be the other way round - any existing gasoline would go off after 6 months.

https://www.rac.co.uk/drive/advice/know-how/does-fuel-go-off....

A group of survivors could scavenge a lot of solar panels, bit good luck restarting an oil refinery.