Hello, Just posting the results from B.S.Labs on the above mentioned oil.I by no means am an oil expert,but I do know many oils are not inferior because they come in a generic bottle without being the official oil of 'Nascar'.I can purchase this oil for $30 for 2 gallons,$25 on sale. I change my oil often (every5-6k).Would appreciate any opinions on the oil for running it in both gas and diesel engines.Thanks