| i asked the same question on a site in the US
with one interesting response....
Chuckracer
...some dude... Join Date: Jan 2005
Location: Chandler, Arizona, USA
Posts: 1,803
Every Ohlins fork I've worked with leaves a little oil ring on the leg. It's normal
I have worked as a chassis and suspension set-up man for several race teams through nineties, from local club racing 600 class teams to the AMA with a Pro Thunder team, and very unofficially on a top AMA Ducati team with two very well known riders. I was club racing in this same time period and doing occasional nationals (750SS).
The first time I saw this, I was concerned and questioned a couple people far more skilled than I, and was told by both that it's normal. Apparently, Ohlins fork seals carry more oil in the seal than normal Showa or Kayaba forks. This helps combat stiction. Other streetbike based forks don't do this simply because it wouldn't do to have that thin film of oil left on the stancion tube. People aren't used to seeing that and think the seals are bad if they see any oil at all.
Your shop is shotting ya straight.  | 
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