Health Benefits of Delta-8 Oil Tincture Recently, two products have hit the market with claims of being a Delta-8 oil and a full spectrum CBD oil. Many consumers have been confused by these terms, as well as those in the medical community. The main difference between the delta-8 oil and CBD oil is the presence of Delta-8 THC, which may not be included in the plant's leaves and stems. A full spectrum Delta-8 oil is one that contains no Delta-8 THC and is therefore considered completely legal. It is often preferred over CBD oils because it is claimed to be more therapeutic, better tolerated by the body, and has fewer side effects.