A fine Product
Verified Buyer Reviewed by Fell off the Orient Express from Arizona on Monday, January 23, 2017
While one can use any oil, including 3 and 1, this one is specially formulated for use on a whetstone. At these prices, you can't go wrong. BTW, you must use oil of a whetstone( although I've seen some real old timers, even older than me) spit on the stones, instead of using oil) for it to do it's job.