ACDelco 10-9066 Dexos1 5W-30 Motor Oil - 1 qt Meets the highest U.S. standards for automotive engine wear protection to provide top-of-the-line engine support Meets ILSAC GF-5 specifications to fulfill current energy-conserving performance standards Meets API SN Service Classification requirements to be suitable for use in modern engines Provides protection against high-temperature deposits to reduce engine wear Provides protection against viscosity breakdown for long oil life and drain intervals Protects against the formation of sludge and varnish deposits on engine parts to provide additional engine support even in demanding stop-and-go driving conditions Meets the highest U.S. standards for automotive engine wear protection to provide exceptional engine support Meets dexos1 specifications, resulting in high resistance to oxidation, excellent low-temperature flow and pump ability during early-morning cold start-ups, and excellent protection against formation of sludge and other harmful deposits