What I use is called light mineral oil. It is sold at farm supply stores and is usually sold as a laxative for horses and other larger animals. I believe it is just one step under a "food grade" mineral oil, being handled and packaged in a less sanitary manner.
Hope this helps Gary.
-=Will=-
We just started slabbing yesterday and are using the same stuff. Works a treat, the cuts are smooth, it holds up well and the blade doesn't seem remotely warm when I lift the hood. Paying about 14/gal for it now at a local farm and ranch supply.
