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AMSOIL Signature Series Max-Duty Synthetic Diesel Oil 5W-30

Maximum-duty protection for your hardest-working diesel engines

New Signature Series 5W-30 Max-Duty Synthetic Diesel Oil (DHD) is a top-tier, versatile oil that is ideal for capturing sales in the fleet market. It presents wide applicability and the ultimate in protection, performance and convenience for mixed fleets, helping fleet managers simplify maintenance and lubricant inventory. Its extended-drain capability further maximizes convenience and minimizes downtime for fleet managers with busy schedules. 

  • 6X more enginge protection
  • Meets diesel and gasoline specification, including API CK-4 API ISN and the upcoming API SP specification
  • Combines the wear protection benefits of a 15W-40 with the fuel economy benefits of a 5W-30
  • Combats LSPI (low-speed pre-ignition)
  • Low-phosphorus formulation provides excellent protection for catalytic converters
  • Outstanding cold-temperature performance
  • Extra protection for extended drain intervals