Castrol GTX Full Synthetic 5W-20 Motor Oil, 5 Quarts, Case of 3

6X better wear protection on critical engine parts than industry standards** 1.3X better sludge protection than industry standards* 3X Stronger against viscosity breakdown than leading full synthetic^ Protection for 10,000 miles between oil changes *As measured in Sequence VH sludge test vs. API SP limits **As measured in the latest Sequence IVA test ^ Based on Kurt Orbahn test in 5W-30 grade Meets or exceeds the following specifications: API SP/SN PLUS/SN ILSAC GF-6 Meets Ford WSS-M2C945-B1 Meets Ford WSS-M2C960-A1