Join Date: Feb 2009
Location: Titusville, FL, USA
They are under quite a bit of pressure, and are build immensely tough. I've seen them (remote mount models) take quite a bit of abuse on race bikes. The only weak point being where they connect to the shock. I have seen them fail where the bleed (fill?) fitting went into them, but I don't even think the BMW one has one of those.
Sounds like a bad seal of some sort. Unfortunately, that stuff sometime happens, even to pricey Ohlins gear.