Engine Oil: Viscosity: Notes
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.
Viscosity is resistance to flow. Thick oils have a high resistance and, therefore, a high viscosity. Thin oils have a low resistance and, by the same token, a low viscosity.
A Society of Automotive Engineers (SAE) number that appears in the center of the API logo. The SAE number defines the viscosity grading of oils, both single-grade and multigrade