The Valet key will not open the glove box or trunk. The master key opens everything. It usually has a red mark on the black fob
1991 420 SEL = 19.7 combo city & Hwy; July 2008
my 1991 Mercedes 420sel have probleme when i sheiffing to reverse gear take long be enquad
The gap for your 420 sel is .32... dont forget to use a good plug!
blaupunct
I had the same problem on my 420 SEL, you first have to remove the window wiper fluid container and after you can reach the screws for the battery after that it is simple.
10w-40 as it says in the manual...10w-30 is second choice
Approx. 8 quarts
Torque specs for WATER PUMP Mercedes 420 SEL are: 7.3 diesel and 15 to 18 foot pounds of torque
answer
I would ask Google.
You can find a vacuum schematic for the 1991 Mercedes 420 SEL in the vehicle's service manual, which may be available for purchase online or at a local auto parts store. Additionally, websites like BenzWorld, Mercedessource, or the official Mercedes-Benz forums often have resources and community members who can share schematics. You might also check for repair manuals on platforms like Haynes or Chilton, which may include vacuum diagrams.
including reserve, 126 engine, 201.034 engine, and 201.126 engine respectively, ammount in liters are 90, 70 and 55, hope that helps