the only negative is that most of the contents are WAY to new for the machines I collect... I need one of these form the 1880's hehe

As an example the "Howe" listed on this is a Howe G..... yikes...
I have an A and a B and a C on the way...

I will try the olive oil method. The vinegar and salt seemed to work well and slowly (I like that) but I am concerned about residue sodium, so the oil is a cool option, thank you for sharing.