The W126 has a damper on the steering linkage, and it needs to be effective, or this is the result: a violent wobble which will appear out of nowhere and scare you. Not particularly expensive to replace as I recall. I hope this helps you.

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Providing a home for these cars:
1951 Buick Special De Luxe
1977 Rolls-Royce Silver Wraith II
1970 Rolls-Royce Silver Shadow
1986 Mercedes-Benz 420 SEL
2005 Mercedes-Benz E 320 CDI
2012 GMC Sierra 1500 4X4
1927 Pierce-Arrow Series 80
1931 Pierce-Arrow Series 43
1926 Ford Model T coupe