If you use a car dolly, and decide to tow it from the rear, do not exceed 40-45mph. I've towed over 30 W123 and W126's VERY long distances. If I'm forced to tow backwards, I ratchet strap the steering wheel to both front seat frames to ensure the wheel stays locked. If you exceed 45MPH, the weight in the front of the car from the engine coupled with the likely play in the front end will combine to cause the car to violently sway. Like others have said, always best to trailer, if not, tow forward with the driveshaft removed, and last resort as I've described.

Be careful.

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1987 300SDL #1, 1987 300SDL #2, 1980 240D, 1982 300SD, 1994 S350, 1990 350SDL, 1991 350SD, 1985 300D, 2005 E320CDI

Gone, but not forgotten: 1981 300SD, 1982 300SD, 1987 300SDL, 1983 300TD, 1980 300CD, 1981 300SD #2, 1987 300D, 1987 300TDT, 1980 300D