Mobil Delvac 1™ Advanced Fuel Economy

Advanced full synthetic, high-performance diesel engine oil

Mobil Delvac 1™ Advanced Fuel Economy 5W-30 is an advanced full synthetic, high-performance diesel engine oil that meets or exceeds leading industry and original equipment manufacturer (OEM) fuel economy specifications.

Mobil Delvac 1 Advanced Fuel Economy 5W-30 engine oil features an advanced low-ash formulation that delivers exceptional protection for most engine and exhaust aftertreatment parts. Its cutting-edge technology provides:

  • Best-in-class fuel economy potential*
  • Protection during extended oil drains up to 100,000 miles†
  • Long engine life and reliable operation in a wide range of applications
  • Emission system protection

Tested and developed with the consideration of different diesel fuel qualities, Mobil Delvac 1 Advanced Fuel Economy 5W-30 engine oil was designed to protect engines with the use of biofuel components. Mobil Delvac 1 Advanced Fuel Economy 5W-30 engine oil should only be used where an API FA-4 oil is recommended by the OEM. Before using this product in an engine, users should consult recommendations as shown in an owner's manual or other service bulletins.

Mobil Delvac 1 Advanced Fuel Economy 5W-30 diesel engine oil is recommended by ExxonMobil for use in:

  • Heavy-duty, low-emission diesel engines where API FA-4 is recommended by the engine builder/OEM, utilizing technologies such as diesel particulate filter (DPF), selective catalytic reduction (SCR), continuously regenerating traps (CRT), diesel oxidation catalysts (DOC) and exhaust gas recirculation (EGR)
  • Heavy-duty diesel engines using low-sulfur diesel fuels and many biodiesel fuel formulations
  • Direct-injection or naturally aspirated and turbocharged, diesel-powered equipment
  • On-highway short-haul and long-haul trucks and buses

Features and benefits

  • Enhanced fuel economy potential and extended oil drain interval capability make this product our most sustainable offer we provide for your business and the environment
  • Emission system protection that can contribute to system durability and performance
  • Unsurpassed oxidation stability that helps reduce engine deposits to keep engines running reliably
  • Biofuel compatibility maintains engine cleanliness and protection with biofuel components
  • Excellent protection against oil thickening and degradation contributes to extended oil drain interval capability, helping to reduce the number of oil changes and oil disposal needs
*Relative to conventional 15W-40 engine oil, and within Mobil Delvac 1™ product range.
Actual fuel economy improvement dependent on vehicle/engine type, outside temperature, driving conditions and the viscosity of current engine oil.
Results may vary based on vehicle/engine condition, driving and environmental conditions. Consult OEM or ExxonMobil before implementing extended ODIs.
Based on measured viscosity increase in the Volvo T-13 test.

Specifications, approvals and technical details

Specifications and approvals  

Mobil Delvac 1 Advanced Fuel Economy 5W-30 engine oil meets or exceeds the requirements of:

  • API FA-4, SN
  • Cummins CES 20087
  • JASO DH-2

Mobil Delvac 1 Advanced Fuel Economy 5W-30 engine oil is approved by the following OEMs:

  • Detroit Fluids Specification 93K223

Technical details  

SAE Grade 5W-30
Viscosity, ASTM D 445  
cSt @ 40ºC 62
cSt @ 100ºC 10.2
CCS, cP, ASTM D 5293 6,310 @ -30ºC
MRV, cP, ASTM D 4684 16,400 @ -35ºC
HTHS @ 150ºC, cP, ASTM D 4683 3.2
Viscosity Index, ASTM D 2270 153
Sulfated Ash, wt%, ASTM D 874 1
Total Base #, mg KOH/g, ASTM D 2896 11
Pour Point, ºC, ASTM D 97 -42
Flash Point, ºC, ASTM D 92 238
Density @ 15ºC kg/l, ASTM D 4052 0.850
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