They need the timing chain and rails done every 100k like clock work. Don't try and put this off on a M116 or you will be looking for a new engine.

If no record of them being changed comes with the car plan on spending $500-$1k right off the bat.

Other then that basic W126 problems that have been talked about to death. Rust shouldn't be an issue with an AZ car.

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2006 CL500
1969 280SE
2023 Ram 1500
2026 Genesis GV70
2007 Tiara 3200