Winsor and Newton - Cold-Pressed Linseed Oil - 75ml - Winsor and Newton Cold Pressed Linseed Oil is a slightly yellow oil, which is extracted without the use of heat. This can be added to colour to reduce the consistency, improve flow, and increase gloss and transparency whilst reducing brush marks. Thin with Turpentine or Artists White Spirit. This oil dries slightly quicker than refined lineseed oil and may have better flow with some colours.