Hi and welcome! One of our sponsors, Danish Sound Parts, offers this:  

Location: Warwickshire, UK

My B&O Icons:

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Hello Guy. Many thanks for the advice. I will contact Danish Sound Parts and see what they say. The grease they advertise is Barrierta L 55 – 2. rather than the B&O recommended L55-3. My 1996 beocenter's CD works really well, but occasionally (once or twice during a CD's playback), it drops sound for a second. I will let you know the outcome. Best wishes, Nigel.  

I recently serviced my Beosound 2300 with exactly this grease (purchased for a Beogram, but I thought it approprite to CD rails as well.) I'm not sure if it was my cleaning the old grease off the rails and/or the new grease, but between the two of them it totally fixed a 'jumping' problem I had on every CD around the same proportion through the disc. I'm glad I tried this first before swapping out the laser....

Many thanks for the helpful comments. I emailed Danish Sound Parts who replied within a few minutes to confirm  this grease is suitable for CD rails. I will post the results in a few weeks when the job is done. Once again, many thanks, and best wishes. Nigel.