Mercedes Coupes/Sedans/Wagons 1974-1984 Repair Guide

Hydro-Pneumatic Suspension Reservoir


FLUID LEVEL CHECK 450 Series Sedans, 300TD and 6.9 Models

The hydro-pneumatic suspension uses a special oil. See the list of approved oils in the beginning of this section.

The car should be level and the engine warm.

  1. Remove the cover from the oil reservoir. The reservoir is located at the driver's side front corner of the engine compartment.
  3. Remove the dipstick and wipe it clean.
  5. Reinsert the dipstick and read the oil level. It should be between the maximum and minimum marks on the dipstick. There is about 2 pts between the "max" and "min" levels.