What happens if you mix paint thinner and oil?

Mixing paint thinner and oil typically results in a separation rather than a true mixture, as paint thinner (a solvent) is designed to dissolve oil-based substances but doesn't blend with them. The paint thinner may dilute the oil, making it easier to apply or clean up, but the two will not create a stable solution. This combination can also produce harmful fumes, so it's essential to use it in a well-ventilated area and follow safety precautions.