S4 Quattro Sedan V6-3.0L SC (CCBA) (2010)
A leaking shock absorber is characterized by a wet film of oil running down the pipe. This needs to be replaced.
Shock absorbers with oil marks
A light film of dried oil or oil marks on the pipe beneath the dust guard are not clear indication of a leaking shock. These are caused by residues from
filling up the shock during production or slight "condensation" in the seal area. This small amount of oil is for lubrication and reduces the wear of the
seal.
Tip: This does not affect the shock absorber. No repair is necessary.