He won't let you do a ppi? my car was an "as is" sale to. Be carefull with "as is" W126's. How much blow-by does the 560 have? How does the oil look? Pull a spark plug or two and see how they look.

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