M. Graham Walnut Oil 4 oz. M. Graham & Co. from $7.71 $12.85 Qty. Add to Cart SKU: GRM-42-410 This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Used by artists since the Renaissance, Walnut Oil offers reduced yellowing and streaking. Walnut oil is slow drying and allows longer open time. Tweet