The Castrol Hypuron semi-synthetic engine oil for heavy-duty diesel engines is formulated to maintain its high TBN, while meeting the low ash requirements of API CJ-4.
- Robust detergency to neutralize higher acid levels
- Minimizes oil consumption, reduces piston deposit formation and increases oil film strength
- Contains low amounts of sulfated ash, phosphorus and sulfur
- Designed for extended oil drains
- Exceeds performance requirements of multiple engine manufacturers