Gulf Supreme Duty ULE 15W-40

Gulf Supreme Duty ULE is a high-performance diesel engine oil specially developed for use in engines with extremely low emissions and complies with the latest US and European emission standards. This oil meets the special requirements of the latest engines and increases the service life of exhaust gas aftertreatment devices. It is formulated using state-of-the-art additive technology and highly hydrogenated base oils to provide great performance and protection that may offer extended drain intervals. It meets the performance requirements of the API CK-4 service category. It is also backwards compatible for use in older engines that require API CJ-4 and lower quality oils.