Castrol Ultraclean has a double-action formula proven to clean away the sludge that can block engine oilways and help prevent new sludge formation thanks to its synthetic technology. No other oil keeps engines cleaner. When tested in engines with a high level of sludge.
1.4X superior sludge protection compared to tough industry standards. As measured in the Sequence VH Sludge test vs. API SP test limits
Advanced protection against viscosity and thermal breakdown
Superior protection against high-temperature deposits
Premium-quality base oils and anti-wear additives that help extend the life of your engine
Meets or exceeds API SP/SN PLUS/SN, ILSAC GF-6. Meets Ford WSS-M2C947-B1, Ford WSS-M2C962-A1