Next-Generation Diesel Protection

New Signature Series Max-Duty Synthetic Diesel Oil and Heavy-Duty Synthetic Diesel Oil Provide Best-in-Class Engine Protection.

New Signature Series Max-Duty Synthetic Diesel Oil (DHD, DZF, DEO, DME) replaces Premium Synthetic Diesel Oil (DEO, DME). New Heavy-Duty Synthetic Diesel Oil (ADN, ADO, ADP) replaces OE Synthetic Diesel Oil (OED, OEC).

AMSOIL Signature Series Max-Duty Synthetic Diesel Oil

We invested considerable time and effort developing diesel oil technology worthy of the Signature Series name. New Signature Series Max-Duty Synthetic Diesel Oil meets the challenge on all counts. It represents the top tier of AMSOIL protection and performance for diesel engines, providing 6X more engine protection than required by the stringent Detroit Diesel engine specification.

New Viscosity Options

In addition to 5W-40 and 15W-40 viscosities, the Signature Series line features two new viscosities. Signature Series 5W-30 provides outstanding fuel efficiency and presents an ideal all-fleet option, while Signature Series 0W-40 is formulated specifically to provide easy starts and premium engine protection in cold climates.

Extended-Drain Recommendations Are Back

Our new Signature Series technology carries even more wear protection and viscosity retention than ever, providing turbodiesel pickups exposed to fuel dilution the extra protection needed for extended drain intervals.

  • 6X more engine protection*
  • Highly optimized detergent package provides the ultimate engine cleanliness and efficiency
  • Significantly exceeds industry requirements
  • Full OEM specification coverage
  • High TBN provides outstanding acid neutralization for long-term engine protection
  • Reduces oil consumption
  • Exceptional cold-temperature performance
  • Top-grade protection for extended drain intervals
  • Available in 5W-30, 0W-40, 5W-40 and 15W-40 viscosities

 

AMSOIL Heavy-Duty Synthetic Diesel Oil

Heavy-Duty Synthetic Diesel Oil delivers outstanding protection and performance for customers seeking an upgrade over conventional and other synthetic diesel oils, providing 4X more engine protection than required by the stringent Detroit Diesel engine specification.

Turbo Truck Diesel Oil

In addition to 10W-30 and 15W-40 viscosities, a new 5W-40 viscosity provides excellent, cost-competitive protection for turbodiesel pickups.

  • 4X more engine protection*
  • Highly optimized detergent package provides outstanding engine cleanliness and efficiency
  • High TBN provides outstanding acid neutralization for long-term engine protection
  • Excellent opportunity for price-conscious customers to move up to AMSOIL quality
  • Reduces oil consumption
  • Outstanding protection for OEM-recommended drain intervals
  • Available in 10W-30, 5W-40 and 15W-40 viscosities

 

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

automatic transmission issues

Do Transmission Fluid Additives Work? John Baker| Feb 26, 2024 9:04 AM Walk the aisles of most auto parts stores and you’ll find multiple “mechanic-in-a-bottle”-type additives that claim to restore transmission performance. The claims made typically include some variation of the following: • Frees stuck valves to improve shifting • Fixes transmission slipping • Restores smooth […]

Understanding Oil Viscosity Viscosity is the measure of a fluid’s resistance to flow. _by David Hilgendorf|January 17, 2023 The physical properties of lubricants are measured by characteristics like viscosity, shear stability, high- and low-temperature performance, water resistance and volatility. Lubrication science seeks to optimize a lubricant’s performance by managing these properties using different base oils […]

Top 5 Skid Steer Maintenance Tips _by David Hilgendorf|September 29, 2023 Skid steers are built for tough construction, excavation, agricultural and other professional projects. Whether you’re clearing land, moving rocks or tearing down a wall, a skid steer is an excellent piece of equipment for many different jobs. But these nimble machines can be expensive […]

thermal runaway occurs when viscosity drops out and wear increases

How Often Should I Change Differential Fluid? Fluid change intervals depend on your vehicle, driving conditions and gear oil quality. Save time and cash first by improving the situation with this differential fluid solution! _by David Hilgendorf|Feb 26, 2023 A differential is a set of gears that allows a vehicle’s driven wheels to revolve at […]

New European oils for 2023 0W-30 and 10W-60

New AMSOIL Synthetic European Motor Oil Viscosities A new 10W-60 and 0W-30 for several BMW, Volkswagen and other fancy European cars. _by Brad Nelson|June 13, 2023 Those who know, know. The sophisticated engineering, finely-tuned performance and artistic styling of European cars can turn a daily commute into a grin-inducing experience. The design of these vehicles […]

EZ marine lower gear lube service

Service Marine Lower Units to Prevent Water Damage Preventing rust and other water-related problems in marine lower units. Most other Marine Gear Oils fail to make the grade. We learn more on that from our own customers when they make the switch. by David Hilgendorf|April 24, 2023 Water and gear lube don’t mix. Unfortunately, you […]