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1320 Synthetics

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1998.5-Current 5.9 & 6.7 Cummins

AMSOIL synthetic lubricants are the solution for drivers who want the most from their RAM HD PICKUP. How good are they? Our synthetic motor oils blow the doors off the highest industry standards.


Protect your RAM in any driving condition with our specially formulated motor oils.

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AMSOIL Signature Series Max-Duty Synthetic Diesel Oil provides a premium, fuel-efficient choice.


Fuel expenses comprise a significant portion of any fleet’s budget, and optimizing fuel economy is essential for reducing costs and maximizing the bottom line. To help customers reach this goal, many original equipment manufacturers (OEMs) now recommend 10W-30 diesel oil for improved fuel economy and cost savings.


New Signature Series 10W-30 Max-Duty Synthetic Diesel Oil is ideal for customers looking for premium protection and the improved fuel efficiency afforded by a 10W-30. It provides outstanding protection for over-the-road trucks, smaller off-road equipment and turbodiesel pickups specifying 10W-30 (Cummins* specifies 10W-30 for normal service for 2019+).


Keeps Turbos Clean

AMSOIL Signature Series Max-Duty Synthetic Diesel Oil provides protection boosted to the max, delivering up to 60% better turbo cleanliness and withstanding the extra demands you place on the turbo when pulling heavy loads or updating the tune for maximum horsepower


Find out more

Protection Boosted to the Max

SIGNATURE SERIES MAX-DUTY SYNTHETIC DIESEL OIL

SIGNATURE SERIES MAX-DUTY SYNTHETIC DIESEL OIL

SIGNATURE SERIES MAX-DUTY SYNTHETIC DIESEL OIL

 Turbodiesel Pickup: Two times (2X) OEM1  recommendation, not to exceed 25,000 miles or one year, whichever comes first. 


  • 6X more engine protection1
  • Highly optimized detergent package provides the ultimate engine cleanliness and efficiency
  • Significantly exceeds industry requirements
  • Excellent fuel economy
  • 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
  • Also available in 5W-30, 0W-40, 5W-40 and 15W-40 viscosities
  • Full OEM specification coverage: API CK-4/SN, CJ-4, CI-4+, CF · Volvo VDS4.5, VDS4, VDS3 · Mack EOS-4.5, EO-O · Renault RLD-4, RLD-3 · Cummins CES20086, CES20081 · Caterpillar ECF-2, ECF-3, ECF-1-a · DDC 93K218, 93K215, 93K214 · DFS 93K222 · ACEA E9, E7 · MB 228.31 · MAN 3575 · MTU Type 2.1, II, I · JASO DH-2 · Deutz DQC III-10LA · Ford WSS-M2C171-F1


1Based on independent testing in the Detroit Diesel DD13 Scuffing Test for Specification DFS 93K222 using 5W-30

HEAVY-DUTY SYNTHETIC DIESEL OIL

SIGNATURE SERIES MAX-DUTY SYNTHETIC DIESEL OIL

SIGNATURE SERIES MAX-DUTY SYNTHETIC DIESEL OIL

 

  • 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.


  • AMSOIL Heavy-Duty Synthetic Diesel Oil is recommended for the drain intervals stated by the original equipment manufacturer (OEM). Refer to the owner’s manual for the specific oil change interval. Intervals may be extended beyond the OEMrecommended interval with oil analysis. Provides lasting protection for multiple events during competition. Use oil analysis to determine appropriate drain interval for competition use or when extending drain intervals beyond the OEM recommendation. 

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