OEM strut on a 2000 VW Beetle, 60,000km's. Just picked this car up in very good shape, has only seen one winter according to the previous owner. I had it inspected and I was told that the left front strut was starting to leak. I brought the car home, jacked it up and took a look myself. I can see a slight film below the brass part, but nothing on the cylinder at all. The right front strut actually had a bit more film than the left! I've got a bit of suspension work behind my belt and I cannot see anything wrong here, I also called my neighbour over who is a mechanic and he said that he couldn't see anything worth even mentioning. What do you guys think?
Left side(reported bad side):
Right side(reported good side):
Black film on cylinder is actually dirt from my fingers:
Left side(reported bad side):


Right side(reported good side):


Black film on cylinder is actually dirt from my fingers:
