So perhaps some of you know what this stuff is, and how I can clean it off.
I made a photo of the affected grooves.

You can use D4+. Works good on shellac and vinyl.bart1927 wrote:I have a couple of records with some dirt that I can't get off. It looks like brown specs in the grooves, and it is only present in certain areas so it can't be record wear. I used my trusted cleaning method (lukewarm water with some halamid in it (to kill fungus), a nailbrush and a drop of dishwasher) with only minimal result.
I don't think d4+ is the same as WD40. The dirt is not mixed in with the shellack, I can feel it on the surface, it feels like sand. I don't know if they sell d4+ over here in the Netherlands, but I will look around.larryh wrote:WD 40, is that really a good item to spray on records? I think I have seen comments on this but I have read that on things such as clocks the product may get it going but eventually attracts dirt. Wouldn't it do the same on records? Don't know just curious. I too need to find the best way to clean up grooves without damaging the surface. I have tended to notice that cleaning is not very prone to eliminate noises which must be more in the record than on the surface in many cases.
Larry