TotalEnergies Rubia Optima 1100 HZX 15W-40 Heavy-Duty Diesel Engine Oil

• TotalEnergies Rubia Optima 1100 HZX 15W-40 is a high-performance, low-SAPS lubricant developed for the latest on-road diesel engines and is especially recommended for ISUZU vehicles.  
   
• With its “low-SAPS” (low sulphated ash, phosphorus and sulphur) technology, it protects diesel engines equipped with post-treatment systems such as diesel particulate filters (DPFs). Its advanced formulation enables coverage of a mixed-brand fleet with only one product, simplifying maintenance and reducing operating costs.
   

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Benefits of Using TotalEnergies Rubia Optima 1100 HZX 15W-40

• DPF & After-Treatment System Protection: The low-SAPS formulation (low sulphated ash, phosphorus and sulphur) protects diesel particulate filters (DPFs) and other exhaust after-treatment systems from clogging and premature damage, extending their service life.
• Excellent Shear Stability: Maintains viscosity under highly loaded contacts and extreme operating conditions, ensuring strong and consistent engine protection even under severe duty cycles.
• Superior Oxidation Stability: Disrupts oxidation reactions and prevents harmful sludge formation, keeping hotter engines clean and protected throughout extended drain intervals.
• Extended Oil Drain Intervals: Advanced additive technology helps maintain oil performance for longer, reducing maintenance frequency, downtime and total operating costs for commercial fleets.
• Mixed-Fleet Simplicity: Covers a wide range of truck and bus brands with a single product, eliminating the need to stock multiple lubricants and reducing the risk of misapplication.
• Broad Backward Compatibility: Suitable for the latest Euro VI engines as well as older Euro IV and V powertrains, making it the ideal choice for mixed-age fleets.
   

Ideal Applications 

• Latest generation on-road diesel engines (Euro IV to Euro VI and beyond)
• ISUZU trucks and commercial vehicles (especially recommended)
• Volvo, Renault Trucks, Mack, Cummins, DAF, IVECO, Detroit Diesel and Ford commercial vehicles
• Diesel engines equipped with exhaust after-treatment systems (DPF, SCR, EGR)
• Mixed-brand commercial vehicle fleets requiring a single lubricant solution
• High-load and demanding operating conditions: long-haul, urban delivery, and construction

FAQ

• What does “low-SAPS” mean, and why does it matter?
  Low-SAPS stands for low sulphated ash, phosphorus and sulphur. These elements, if present in high quantities, can clog diesel particulate filters (DPFs) and damage other exhaust after-treatment systems. A low-SAPS formula significantly extends the life of these expensive components.
• Why is this product especially recommended for ISUZU vehicles? 
  Rubia Optima 1100 HZX 15W-40 carries an official ISUZU approval, making it the factory-endorsed choice for ISUZU truck and commercial vehicle engines, providing the exact level of protection specified by the manufacturer.
• Can I use this oil for my entire mixed-brand fleet? 
  Yes. The Rubia Optima 1100 HZX 15W-40 is designed to cover a fleet of mixed brands with a single product, meeting the requirements of Volvo, Renault Trucks, Mack, Cummins, DAF, IVECO, Detroit Diesel and Ford commercial vehicles.
• Is it compatible with older Euro III and IV engines? 
  Yes. Thanks to its backward compatibility with API CH-4, CI-4, CJ-4 and MB-Approval 228.31, it is suitable for older diesel engines as well as the latest Euro VI powertrains.
• Does it support extended oil drain intervals? 
  Yes. The advanced oxidation stability and dispersant package maintains oil performance for longer, supporting extended drain intervals and reducing maintenance costs for commercial fleets.