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Gulf Super Duty Synthetic HD Diesel Engine Oil, SAE 5W-40 is a full synthetic, heavy duty engine oil formulated to meet or exceed the requirements of most major manufacturers of diesel engines. It is formulated with synthetic base fluids that provide extra thermal stability, oxidation resistance, shear stability, high-VI and excellent low-temperature fluidity. .

Enhanced fuel economy can be expected when using Gulf Super Duty Synthetic HD engine oil due to its enhanced fluid friction properties and lowered operating temperatures. It also provides for superior cold starting and faster startup lubrication compared to conventional 15W-40 engine oils.

Gulf Super Duty Synthetic HD SAE 5W-40 is recommended for modern turbo-charged, low emission diesel engines used in on- and off-highway equipment. Suitable for new and older diesel powered vehicles from Class 8 tractors / trailers to heavy utility and delivery fleets.

Approvals:

• API CK-4, CJ-4, CI-4 Plus / SN • Cummins CES 20086, 20081

• Caterpillar ECF-3, ECF-2 • ACEA E9-12

• Ford WSS-M2C171-F1 • JASO DH-2

• Volvo VDS-4.5, VDS-4 • MAN M3575

• Detroit Diesel 93K222, 93K218 • MTU Category 2.1

• Mercedes Benz 228.31 • International (Navistar) diesel engines

• Mack EOS-4.5 • Renault VI RLD-4, RLD-3

• Mack EO-O Premium Plus

  
  Select Vehicle to Check Fitment
In Stock
Chevrolet
  • Silverado HD (Gen 1) w/ 6.6L Duramax LB7 (2001-2004)
  • Silverado HD (Gen 1) w/ 6.6L Duramax LBZ (2005-2007)
  • Silverado HD (Gen 1) w/ 6.6L Duramax LLY (2005-2006)
  • Silverado HD (Gen 2) w/ 6.6L Duramax LML (2011-2014)
  • Silverado HD (Gen 2) w/ 6.6L Duramax LMM (2007-2010)
  • Silverado HD (Gen 3) w/ 6.6L Duramax LML (2014-2016)
Ford
  • Super Duty Gen 1 w/ 6.0L Powerstroke Navistar VT365 V8 (2003-2007)
  • Super Duty Gen 1 w/ 7.3L Powerstroke Navistar T444E (1999-2002)
  • Super Duty Gen 2 w/ 6.4L Powerstroke MaxxForce V8 (2008-2010)
  • Super Duty Gen 3 w/ 6.7L Powerstroke Scorpion V8 (2011-2016)
  • Super Duty Gen 4 w/ 6.7L Powerstroke V8 (2017-2018)
GMC
  • Sierra HD (Gen 1) w/ 6.6L Duramax LB7 (2001-2004)
  • Sierra HD (Gen 1) w/ 6.6L Duramax LBZ (2005-2007)
  • Sierra HD (Gen 1) w/ 6.6L Duramax LLY (2005-2006)
  • Sierra HD (Gen 2) w/ 6.6L Duramax LML (2011-2014)
  • Sierra HD (Gen 2) w/ 6.6L Duramax LMM (2007-2010)
  • Sierra HD (Gen 3) w/ 6.6L Duramax LML (2014-2016)
Jeep
  • Grand Cherokee EcoDiesel (WK2) w/ 3.0L VM L630 Engine (2014-2017)
Ram
  • 1500 EcoDiesel w/ 3.0L VM L630 Engine (2014-2018)
  • Gen 3 2500/3500 w/ 6.7L Cummins (ETJ) (2007-2009)
  • Gen 4 2500/3500 w/ 6.7L Cummins (ETJ) (2010-2012)
  • Gen 4 2500/3500 w/ 6.7L Cummins (ETK) (2013-2017)

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