Rotorbug here are three of my Cadet Major stocks that have only been oiled with undiluted boiled linseed oil. Approximately 8 coats on each stock. Stocks were not sanded down but one was done by the previous owner
Rotorbug the recommended product is Neatsfoot oil as suggested by the UK guys.I have tried saddle stockists locally but had no luck finding it. I have always used 3in1 oil which does cause it to diesel for a while until burned off.