Can you mix walnut oil with oil paints?

Yes, you can mix walnut oil with oil paints. Walnut oil is a traditional medium that enhances the flow and transparency of oil paints while providing a slower drying time, allowing for more extended blending and manipulation. It can also improve the paint's gloss and flexibility. However, it's essential to use it in moderation to avoid overly oily mixes that may affect the paint's adhesion and drying properties.