In article l.de,
"Rufus Stone" says...
I am looking for a source of sewing machine oil, mainly for
lubricating the bearings on computer fans. (CPU, Video Card etc..).

I have tried the local sewing machine type shops without success. Many
suggest the 3 in 1 type oil, but from experience this dries out very
quickly.

Can anyone point me to a source please?

I use ordinary multigrade for sewing machines, and have used it on
fans too, with no apparent problems. I agree that 3-in-1 gums up.