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Lubricants


Heavy-Duty Diesel Engine Oil

Find the right heavy-duty diesel engine oil

  1. DURON™ UHP E8-X 10W-40 AND 5W-30*

    Applications and Performance

    • Ultra High Performance synthetic diesel engine oil designed for longer engine life, better all weather performance and increased efficiency.
    • Exceeds ACEA E4/E7/E8/E11 standards.
    • Low SAPS (Sulphated Ash, Phosphorous, Sulphur).
  2. DURON™ CLASSIC 15W-40 and 20W-50

    Application and Performance

    • Premium multigrade heavy-duty engine oils recommended for engines fueled by diesel, gasoline, propane, or compressed natural gas (CNG), where applications specify API CH-4 / SJ.
    • Available in select countries.
  3. DURON™ EXTRA 15W-40 and 20W-50

    Application and Performance

    • Premium multigrade heavy-duty engine oils recommended for engines fueled by diesel, gasoline, propane, or compressed natural gas (CNG), where applications specify API CJ-4 / SN.
    • 15W-40 is licensed with API as CJ-4 / SN.
    • Available in select countries.
  4. DURON™ SAE 10W, 30, 40 and 50

    Application and Performance

    • Used in many applications such as older heavy-duty transmissions, older diesel engines, including 2-stroke Detroit Diesel models, and hydraulic systems needing a detergent-containing hydraulic oil. Meets former API level CF (SAE 10W). Meets former API level CF and CF-2 (SAE 30, 40, 50).
  5. DURON™ GEO LD 15W-40 and 10W-30

    Application and Performance

    • Designed for Compressed Natural Gas/Liquefied Natural Gas (CNG/LNG) mobile engines and works in diesel and gasoline engine as well - a true mixed fleet fluid.
    • Approved for Cummins CES 20092 and fully backserviceable to CES 20085 specifications.
    • API CK-4/SN licensed and approved by other major diesel engine OEMs like Detroit Diesel, Mack, Volvo and Renault.
    • Extended drain intervals in CNG/LNG engines without the risk of increased engine wear and sluggish performance.
  • *In ROW, the product names are DURON™ UHP E8 10W-40 (E8DUH14) and 5W-30 (E8DUH53)

DURON™ line of premium performance multigrade diesel engine oils delivers industry leading protection against increased wear which can lead to lower productivity and impaired fuel economy. They’re formulated to exceed API CK-4 requirements and are suitable for use in the latest low emission systems. DURON is back serviceable and carries the API service CJ-4, CI-4 Plus, CI-4, and CH-4 licenses required by pre-2010 diesel engines.

  • DURON™ UHP 5W-30 is an Ultra High Performance Diesel engine oil formulated with synthetic base oils and high performance additives to deliver fuel economy benefits and exceptional protection against engine wear.

  • DURON™ SHP 10W-30 is a Super High Performance synthetic blend heavy-duty engine oil that delivers advanced engine protection and all-weather performance. It provides optimal engine durability and can deliver up to 1%* fuel economy improvements.

  • DURON™ UHP 10W-40 is an Ultra High Performance synthetic all-weather heavy-duty diesel engine oil. It is formulated to provide exceptional protection against engine wear and deliver extended drain performance (exceeding OEM standard intervals)† even in the harshest operating conditions.

  • DURON™ UHP 5W-40 and 0W-40 are Ultra High Performance synthetic engine oils that provide all-season protection and performance, especially in low temperature environments. DURON UHP 5W-40 and 0W-40 help conserve energy and reduce engine wear through ease of cold weather start-up and lower viscous drag.

  • DURON™ HP 15W-40 is a high performance heavy-duty engine oil that delivers all weather engine protection including dependable cold start up and exceptional shear stability. It can deliver extended drain capabilities (exceeding OEM standard intervals)†.

  • *Comparing an SAE 15W-40 with 4.1cP HTHS vs a 10W-30 with 3.5cP HTHS.
  • †Extending drain intervals should always be undertaken in conjunction with an oil analysis program.

The railroad industry is tough, and you need a strong lubricants partner who really understands this business. Like Petro-Canada Lubricants, Red Giant Oil™ is also an HF Sinclair brand. Their RGO locomotive engine oils have been built over a century-long legacy of rail industry expertise. As engines have evolved, becoming even stronger and more powerful, so have Red Giant Oil™ products. HF Sinclair has focused on this sector, developing engine oils that are as reliable as our commitment to this industry.


  1. Railway Engine Oils:

    Application and Performance

    • Formulated for severe service in diesel engines, driving railroad locomotives, marine vessels and electric power generators.
  2. Red Giant Locomotive Engine Oil 20W-40 G7

    Application and Performance

    • Multigrade 11 TBN, LMOA Generation 7 level engine oil that is approved by Progress Rail (formerly EMD) and Wabtec (formerly GE).
  3. RALUBE™ 40 CFS

    Application and Performance

    • SAE 40, 14 TBN, LMOA Generation 5 engine oil that is SFU for Progress Rail, Wabtec, Caterpillar 3600 Series and 2-cycle Detroit Diesel engines, including Series 149.