Betsie is parked about 8 consecutive months out of the year (winter season in Alaska). I park her with the tank full of diesel and winter treated so it won't gel. I pretty much ignore it during that time, and don't touch it.

When summer rolls around, I put the battery back in, check to make sure the small fuel filter is still primed, crank it for a few seconds with the STOP lever pressed in (just to get the oil going a little), and then pre-glow and start.

Starts up fine, builds up pressure quickly and runs as if it was last started yesterday.

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"The MB W123 is so bulletproof, you can drive them forever. Which is a good thing as it takes that long to get anywhere."
Betsie: 1984 W123 300D (hobby, 280k miles)
Myrla: 2001 Mazda Protege 2.0 ES 5spd (daily driver, 130k miles)
The Turd: 2007 Toyota Camry (wife's car, 118k miles)