Turbo Diesel Semi Synt 10W-40 is a high-performance semi-synthetic engine oil designed for the lubrication and protection of modern diesel engines across a very wide range of heavy-duty applications. This versatile oil combines the enhanced performance of synthetic base stocks with quality mineral oils to deliver excellent protection at an attractive value for fleet operators.

Formulated to meet exhaust emission requirements up to Euro V regulation, this oil is fully compatible with engines equipped with exhaust gas recirculation (EGR) and selective catalytic reduction (SCR) systems. However, it is not recommended for engines fitted with diesel particulate filters (DPF), as its additive chemistry is optimized for engines without DPF technology. This makes it an ideal choice for the large installed base of heavy-duty diesel engines operating in Euro III, IV, and V emission classes.

The semi-synthetic formulation provides reliable cold-start protection and rapid oil circulation at low temperatures, while maintaining a robust protective film under the heavy loads and high temperatures typical of commercial vehicle operation. Advanced dispersant and detergent additives keep engine internals clean by preventing sludge and deposit formation, while effective soot handling prevents oil thickening between drain intervals.

Additional performance benefits include strong oxidation resistance that preserves oil quality over extended service periods, reliable corrosion protection for bearings and other metal surfaces, and excellent thermal stability in turbocharged engines. Turbo Diesel Semi Synt 10W-40 is recommended for trucks, buses, construction equipment, and agricultural machinery. It delivers dependable protection for fleets operating diverse diesel engine platforms where DPF compatibility is not required, offering an optimal balance of performance and cost-effectiveness.