High-performance genuine Hitachi 321616 engine oil, formulated as Castrol Vecton 5W-30 E6/E9. This advanced full synthetic 5W-30 oil is specifically engineered for heavy-duty diesel engines, particularly those equipped with Diesel Particulate Filters (DPF). It meets stringent ACEA E6, E7, E9, and API CI-4 specifications, along with numerous OEM approvals, ensuring extended drain intervals and superior engine protection. Supplied in a convenient 20-liter container, it is ideal for maintaining optimal engine performance in Hitachi machinery.