I just purchased by first Mercedes. It is a 1991 560 SEL that I bought with "issues." I am looking forward to learning all I can about these iconic cars. The car is as follows:
1991 560 SEL
Maintenance records up until 100k miles logged in owners manual.
Car is 99 percent straight with only a small ding in the trunk lid and a small dent in the chrome above the front bumper.
Issues: car has a very irregular miss and low power--I checked the spark plug wires at night and they all had blue sparks coming from them!
I plan to change plug wires, plugs, distributor cap and rotor, fuel filter, add fuel treatment, change all fluids and filters, and then see where I am at.