Castrol GTX Full Synthetic 5W-20 motor oil provides maximum protection to help fight the impact of severe conditions that can potentially shorten engine life. It's formulated to provide Superior Protection in 7 Critical Areas including engine wear and sludge control, cleaning away old sludge+++ and protecting against new sludge formation better than required by the latest industry standard. +++When tested in engines with high level of sludge
1.3X better sludge protection than industry standards+
6X better wear protection on critical engine parts 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 SQ/SP/SN PLUS/SN and ILSAC GF-7
GM dexos1 Gen 3 and Meets Ford WSS-M2C947-B1 and Meets Ford WSS-M2C962-A1