Well I had a good look today from both wheel wells, with a torch and a usb camera too.
The pipes from pump to reservoir to rack are all dry.
The whole rack looks dry along its whole length, as do the pipes on the rack.
The only part I couldn't see properly is the servotronic box and the connection to the steering wheel coupling.
The exhaust below the rack is wet with oil so it must be leaking from somewhere. I was expecting at least some wetting of the rack from so much oil, but I cant see any oil on it at all.
Its a mystery!
I'll have to take it to the local mechanic to diagnose before I order anything.
By the way, I rang Audi, they no longer have any LHD racks, so it has to be a re-manufactured unit. I don't know if its the same case for RHD racks.
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