What is a cc grade oil?

CC grade oil refers to a classification of engine oil that meets specific performance standards set by the American Petroleum Institute (API). It is designed for use in gasoline engines, particularly those manufactured before 1966. The "CC" designation indicates that the oil provides a moderate level of protection against engine wear and deposits, suitable for older vehicles with less demanding engine requirements compared to more modern oil classifications. However, it is generally considered outdated for contemporary engines, which often require more advanced oil specifications.