A fully synthetic heavy-duty diesel engine oil meeting API CK-4, balancing fuel economy, engine protection, and long drain intervals for modern low-emission engines.
RUBIA WORKS 4000 15W-40 is recommended for engines equipped with Exhaust gas after-treatment system meeting EURO Stage IV (or US EPA Tier 4F) Standard and, for On-Road, EURO 6, as well as previous standards
A high-performance, API CK-4 diesel engine oil designed for off-highway machinery, delivering extended drain capability and robust protection under severe conditions.
