Every year, almost like clockwork, around December 20th go for enough of a drive to get the oil warm. On dry roads, even if the driveway is snowy, as in the photo above.
Then up on the lift for a pre-hibernation oil change, and into the garage they go. With whatever is in the tank and tires.
Hook up the BatteryMINDers and there they sit until spring.
No starting them up since the oil is fresh. If one gets cold started, it also gets driven until everything is at operating temp, especially the oil. And that's easier said than done if the temps are about 40 or below.