Choosing the Right Diesel Oil

Choosing the Right Diesel Oil

The introduction of AMSOIL Signature Series Max-Duty Synthetic Diesel Oil and Heavy-Duty Synthetic Diesel Oil brings even greater protection and performance, as well as additional viscosity options. How can you decide which oil is right for you?

Signature Series 5W-30 (DHD)

  • Newer Over-the-Road Trucks
  • Mixed Fleets

Signature Series 5W-30 is a versatile oil aimed at mixed fleets of diesel and gasoline vehicles, simplifying maintenance and lubricant inventory. Its extended-drain capability further maximizes convenience and minimizes downtime for fleet managers with busy schedules.

It is also an outstanding option for newer over-the-road trucks that come factory-filled with 10W-30 for improved fuel economy.

  • 6X more engine protection*
  • Recommended for both diesel and gasoline vehicles, simplifying maintenance and lubricant inventory
  • Excellent fuel economy
  • Outstanding cold-temperature performance
  • Extra protection for extended drain intervals

Heavy-Duty 10W-30 (ADN)

  • Newer Over-the-Road Trucks
  • Smaller Off-Road Equipment
  • Some Turbodiesel Pickups

Many newer over-the-road trucks come factory-filled with 10W-30 for improved fuel economy. Heavy-Duty 10W-30 is ideal for customers who want to maintain the improved fuel efficiency afforded by a 10W-30.

It also provides outstanding protection for smaller off-road equipment and turbodiesel pickups specifying 10W-30 (Ford** specifies 10W-30 for normal service).

  • 4X more engine protection*
  • Excellent opportunity for price-conscious customers to move up to AMSOIL quality
  • Improved fuel economy
  • Outstanding protection for OEM-recommended drain intervals

Signature Series 0W-40 (DZF)

  • Diesel-Powered Vehicles and Equipment Operating in Cold Climates

Signature Series 0W-40 is formulated specifically for applications operating in extreme cold. Most over-the-road trucks and heavy equipment are parked outside. Signature Series 0W-40 provides the ultimate cold-weather protection and performance, helping engines turn over faster and reducing start-up wear.

  • 4X better cold-temperature performance***
  • Reduces unnecessary idle time. Engines can be shut down with confidence of restart.
  • Extra protection for extended drain intervals

Signature Series 5W-40 (DEO)

Heavy-Duty 5W-40 (ADO)

  • Turbodiesel Pickups
  • Over-the-Road Trucks
  • Heavy Equipment

Signature Series 5W-40 and Heavy-Duty 5W-40 are ideal for turbodiesel-pickup, over-the-road-truck and heavy-equipment owners who want the cold-weather and fuel-economy benefits of a 5W and the protection benefits of an SAE 40.

  • Outstanding cold-cranking ability and start-up protection
  • Excellent fuel economy

Heavy-Duty 5W-40

  • 4X more engine protection*
  • Excellent opportunity for price-conscious customers to move up to AMSOIL quality
  • Outstanding protection for OEM-recommended drain intervals

Signature Series 5W-40

  • 6X more engine protection*
  • Ideal for customers seeking the ultimate wear protection in severe operating conditions
  • Extra protection for extended drain intervals

Signature Series 15W-40 (DME)

Heavy-Duty 15W-40 (ADP)

  • Over-the-Road Trucks
  • Off-Road Equipment
  • Turbodiesel Pickups

Signature Series 15W-40 and Heavy-Duty 15W-40 are the primary recommendations for most on- and off-road heavy-duty diesel applications in the marketplace; 15W-40 is the most widely used viscosity in the diesel world.

  • Reduced oil consumption
  • Outstanding shear stability, ensuring superior viscosity retention and wear protection in the most severe environments

Heavy-Duty 15W-40

  • 4X more engine protection*
  • Excellent opportunity for price-conscious customers to move up to AMSOIL quality
  • Outstanding protection for OEM-recommended drain intervals

Signature Series 15W-40

  • 6X more engine protection*
  • Ideal for customers seeking the ultimate wear protection in severe operating conditions
  • Extra protection for extended drain intervals

*than required by the Detroit Diesel DD13 Scuffing Test for Specification DFS 93K222.

**All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use. All products advertised here are developed by AMSOIL for use in the applications shown.

***when compared to SAE 15W-40 in ASTM D5293 Cold-Cranking Viscosity test.

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Viscosity comparison chart

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