Engine Oil: Additives
WARNING: This page is about a different car, the 2002 Saturn LW200, 2002 Saturn L200, and 2002 Saturn L100. However, it is still accessible from the selected car via links, so may be relevant.
Additives are chemicals that give fresh engine oil its custom-made properties. Although used in small amounts, they provide a tremendous boost to the performance abilities of engine oil. They, in fact, represent the major difference between the oils of the early 1940's and the highly advanced prescription oils of today.