GL 320 CDI (164.822) V6-3.0L DSL Turbo (642.940) (2008)
After the injector leak oil volume has been checked using the graduated tubes, the fuel in the graduated tubes may exhibit varying degrees of
turbidity (rust-colored). This is not an indication that the injector is defective. The turbidity is caused by contamination (corrosion deposits) at the
leak oil outlet of the injectors.
Note:
In such cases, do not replace any of the injectors.