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API CI-4 specification ensures the oil meets stringent requirements for engines with Exhaust Gas Recirculation (EGR) systems. It provides superior protection against viscosity increase caused by soot contamination and prevents piston deposits at higher operating temperatures exceeding 230°C.

The 15W rating indicates winter viscosity performance down to -20°C, ensuring pumpability during cold starts. At operating temperatures, the 40 grade maintains optimum viscosity for hydrodynamic lubrication in bearings and cylinders at temperatures up to 150°C under full load conditions.

Our formulation contains a balanced package of zinc dialkyldithiophosphates (ZDDP) for anti-wear protection, calcium sulfonates for detergency, succinimide dispersants for soot control, and advanced antioxidants like alkylated diphenylamines that provide 40% better oxidation resistance than conventional additives.

Yes, our Engine Oil 18L 15W-40/CI-4 is compatible with B20 bio-diesel blends. It contains special ester-based dispersants that effectively handle the increased sludge potential and acidity associated with bio-diesel combustion byproducts.

Critical parameters include kinematic viscosity at 100°C (target 14-16 cSt), TBN retention (>50% remaining), fuel dilution (

With advanced oxidation inhibitors and higher TBN retention capabilities, our formulation achieves up to 80,000 km drain intervals in line-haul applications. This is 30% longer than conventional CI-4 oils while maintaining superior wear protection, as confirmed by Mack T-13 testing.

The formulation contains