this must be the worst oil you can buy. I was looking through the selection of oil at the local walmart when I saw a black bottle with a picture of a tire on it.I think it was about 64cents The front said something like "non detergant sae30 api SA" I looked at the back of the bottle and at had a warning on it
! It said" caution, this oil contains NO attitives. using this oil in vehicles newer than 1930 may result in severe engine damage." this stuff shouln't even be legal to sell. whatever you do, don't use this oil