Early W140 cars had many shortcommings, stay away from 92 & 93(early) cars unless you have $$$ to burn, or the previous owners have spent the $$$ already. The best cars are the newest cars! Just like the 90-91 W126 cars. They were the best of there era.
I like the 95+ W140 cars, as they have a fresher look.

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MERCEDES BENZ MASTER GUILD TECHNICIAN
ASE MASTER TECHNICIAN
27 YEARS M.B. TECH