Mobil Delvac 1 LE 5W-30 is a fully synthetic, heavy-duty diesel engine oil that combines advanced engine protection for modern low emissions vehicles with enhanced fuel economy potential and other sustainability-related benefits such as engine durability, emissions system protection and extended drain capability. Key Features: Provides superior engine protection for modern low emissions vehicles Improves fuel economy Protects emissions systems Extended drain intervals Low SAPS formulation for use in DPF and SCR equipped engines Meets or exceeds the requirements of leading OEMs Applications: Mobil Delvac 1 LE 5W-30 is recommended for use in a wide range of heavy-duty diesel engines, including: On-highway trucks and buses Off-highway equipment Construction and mining equipment Agriculture equipment Marine engines Benefits: Mobil Delvac 1 LE 5W-30 provides a number of benefits for heavy-duty diesel engines, including: Superior engine protection Improved fuel economy Emissions system p