It seems to me the quick and easy way to lube the cylinders, pistons and rings is to turn it over with the fuel supply working properly. Cutting the fuel supply will prohibit the natural lube which keeps diesels running for many hundred thousands of miles.

During cold months this wouldn't be an issue for you could remove the glow fuse and turn the engine with the starter.

Being that it's possible it hits and fires right up this time of year I'd kill the compression by removing the glow plugs and let the fuel do it's job. That will ensure the engine does not crank before the oil is well circulated too.

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84 300SD
85 380SE
83 528e
95 318ic