Fishy... the Salina's have "Japanese Oiled Felt washers" - not exactly sure what this means. I've searched all my contacts for info, but come up with zipp.
They seem to be similar to the Sustain and Stradic felt washers though.
On those I use a low viscosity grease like Cal's that can penetrate the washers and it works fine.
Alternatively, if you want to use Oil, I'd try a fairly thick type, like Motor Oil?