Hi Rodc,
It would be interesting to see a photo of your results. I paint with artists oil paints. The medium or vehicle is raw linseed oil except for whites which are Safflower oil. As Sonic Mountain mentioned, they have a slower drying time than most paint. But some are quite quick depending on the pigment and how loaded with pigment the oil paint is. Boiling linseed oil speeds up the drying time. The pigments in oil paint will stain raw wood. On unprepared surfaces the oil will separate from some of the pigment.