I recently acquired some 150 year old salvaged oak and walnut, the oak is from the beams of my great grandfathers tobacco barn. I have read here that people use tung oil and I really liked the idea of an oil verses a polyurethane. I bought some high gloss tung oil from a local hardware store and they also carried Danish oil. Will these two products function the same on scales? I know that tung oil is a waterproofer and sealer, but what is Danish oil? It said on the bottle that it is a sealer and protector for interior surfaces. I like that fact that you can get the Danish oil in different shades. Can someone enlighten me on the difference between these two products.