AMSOIL Diesel Oil - Synthetic
The premium choice diesel oil for model-year 2007 and newer heavy-duty and pickup truck diesel engines requiring API CJ-4 emission-quality oil standards. Delivers extraordinary lubrication in diesel engines in commercial, fleet and personal applications. Exceeds modern specs for emission-quality diesel oil.
AMSOIL Premium 5w40 Synthetic Diesel Oil
Product Code
Pkg./Size
DEOQT-EA
Quart Bottle
DEOQT-CA
Quart Bottles (case of 12)
DEO1G-EA
Gallon Bottle
DEO1G-CA
Gallon Bottles (case of 4)
DEOTP-EA
2.5-Gallon Bottle
DEOTP-CA
2.5-Gallon Bottle (case of 2)
DEO30-EA
30-Gallon Drum
DEO55-EA
55-Gallon Drum
DEO27-EA
275-Gallon Tote
The premium choice diesel oil for model-year 2007 and newer heavy-duty and pickup truck diesel engines requiring API CJ-4 emission-quality oil standards. Delivers extraordinary lubrication in diesel engines in commercial, fleet and personal applications. Exceeds modern specs for emission-quality diesel oil.
AMSOIL Premium 15w40 Synthetic Diesel Oil
Product Code
Pkg./Size
DMEQT-EA
Quart Bottle
DMEQT-CA
Quart Bottles (case of 12)
DME1G-EA
Gallon Bottle
DME1G-CA
Gallon Bottles (case of 4)
DMETP-EA
2.5-Gallon Bottle
DMETP-CA
2.5-Gallon Bottle (case of 2)
DME30-EA
30-Gallon Drum
DME55-EA
55-Gallon Drum
DME27-EA
275-Gallon Tote
Engineered for pre-2007 diesel engines in on-road applications as well as all model year diesel engines in off-road applications. High 12 TBN controls acids from combustion blow-by and EGR. Additives control soot thickening, oxidation and wear. Extended drain capabilities reduce downtime and motor oil expenses.
AMSOIL Heavy Duty 15w40 Synthetic Diesel Oil
Product Code
Pkg./Size
AMEQT-EA
Quart Bottle
AMEQT-CA
Quart Bottles (case of 12)
AME1G-EA
Gallon Bottle
AME1G-CA
Gallon Bottles (case of 4)
AMETP-EA
2.5-Gallon Bottle
AMETP-CA
2.5-Gallon Bottle (case of 2)
AME30-EA
30-Gallon Drum
AME55-EA
55-Gallon Drum
AME27-EA
275-Gallon Tote
AMSOIL OE 15W-40 Synthetic Diesel Oil provides excellent protection and performance in both on- and off-road diesel engines for the original equipment manufacturer's recommended drain interval. It meets API CJ-4 specifications and is suitable for both modern and older diesel applications.
AMSOIL OE 15w40 Synthetic Diesel Oil
Product Code
Pkg./Size
OEDQT-EA
Quart Bottle
OEDQT-CA
Quart Bottles (case of 12)
OED1G-EA
Gallon Bottle
OED1G-CA
Gallon Bottles (case of 4)
OEDTP-EA
2.5-Gallon Bottle
OEDTP-CA
2.5-Gallon Bottle (case of 2)
OED30-EA
30-Gallon Drum
OED55-EA
55-Gallon Drum
OED27-EA
275-Gallon Tote
Engineered for pre-2007 diesel engines in on-road applications as well as all model year diesel engines in off-road applications. Also engineered for all gasoline engines recommending API SL specifications including turbo-charged vehicles. AMSOIL diesel oil provides superior wear protection and fuel efficiency.
AMSOIL Series 3000 Heavy Duty 5w30 Synthetic Diesel Oil
Product Code
Pkg./Size
HDDQT-EA
Quart Bottle
HDDQT-CA
Quart Bottles (case of 12)
HDD1G-EA
Gallon Bottle
HDD1G-CA
Gallon Bottles (case of 4)
HDDTP-EA
2.5-Gallon Bottle
HDDTP-CA
2.5-Gallon Bottle (case of 2)
HDD30-EA
30-Gallon Drum
HDD55-EA
55-Gallon Drum
HDD27-EA
275-Gallon Tote
Exceeds both 10W-30 multi-grade and SAE 30 straight-grade viscosity requirements. Provides outstanding performance in pre-2007 diesel engines in on-road applications as well as all model-year diesel engines in off-road apps. Also recommended for gasoline engines requiring API SL or previous specifications.
AMSOIL Heavy Duty 10w30-SAE 30 Synthetic Diesel Oil
Product Code
Pkg./Size
ACD1G-EA
Gallon Bottle
ACD1G-CA
Gallon Bottles (case of 4)
ACD30-EA
30-Gallon Drum
ACD55-EA
55-Gallon Drum
ACD27-EA
275-Gallon Tote
Amsoil Diesel Oils Provide Maximum Shear Stability
Hard-working diesel engines present a serious challenge to the lubricants that protect them. Tight clearances and intense pressures can generate enough force to tear apart the molecular structure of the oil, causing permanent viscosity loss. Permanent viscosity loss is termed "shear" and leads to accelerated equipment wear, oil consumption and deposit formation.
Shear stability measures a lubricant's ability to withstand shearing forces without degrading to a lower viscosity. To meet CJ-4 requirements for shear stability, the American Petroleum Institute (API) requires diesel oils to pass the Kurt Orbahn 90-Cycle Shear Stability Test.
Resisting shear and maintaining protective viscosity in the harsh operating conditions of diesel engines is challenge enough for many diesel oils, but maintaining viscosity in the face of fuel dilution is another challenge altogether. Factors such as frequent starts, excessive engine idling, short trips and cold weather have contributed to moderate levels of fuel dilution in diesel applications for years, while recent issues with emission systems have brought the fuel dilution problem to a whole new level.
For example, AMSOIL has documented increasing fuel dilution levels in 2007-2009 Caterpillar C13 and C15 on-highway engines. There are many possible causes, including problems with a unit injector or leaking seals. Another cause of fuel dilution is new emission systems using in-cylinder post-fuel injection, a process most 2007-2010 light-duty GM, Ford and Dodge diesel pickups use to regenerate the diesel particulate filter.
Because diesel fuel is a natural solvent, it causes a multitude of problems when it contaminates the oil, including reduced oil viscosity, reduced oil film strength, increased engine wear (particularly in the cylinder/ring area), increased volatility, weakened lubricant detergency, accelerated lubricant oxidation, varnish formation, acid formation/ corrosion and low oil pressure.
The most notable problem associated with increased fuel contamination is reduced viscosity and the corresponding effect it has on oil performance. When combined with shearing conditions, as little as 4 percent fuel dilution is generally enough to reduce an oil's viscosity to less than the specified viscosity grade.
AMSOIL sent five competitive synthetic CJ-4 5W-40 diesel oils to an independent laboratory for shear stability testing. Knowing the tough environment that diesels present to lubricating oils, AMSOIL doubled the standard Kurt Orbahn 90-cycle test and had the oils tested for 180 cycles. Samples were then contaminated with 2 and 4 percent ultra low sulfur diesel (ULSD) fuel. As the graph shows, even after being shear tested for twice the industry standard and contaminated with 4 percent fuel dilution, AMSOIL maintained viscosity and was the only oil to stay within an SAE 40 viscosity rating. As other oils lost viscosity due to shearing forces and fuel dilution, their ability to protect against wear was jeopardized.
AMSOIL Premium Diesel Oils are formulated with an ultra shear stable polymer system that maintains viscosity better than inferior products. Testing proves that AMSOIL provides unsurpassed shear stability, offering better viscosity control than competitive oils.
Even though recent fuel dilution issues forced AMSOIL to adjust its Premium API CJ-4 Synthetic Diesel Oil drain interval recommendations in 2007-2010 Dodge 6.7L, Ford 6.4L and GM 6.6L light-duty turbo-diesel pickups and 2007-2009 on-highway Caterpillar C13 and C15 engines to the manufacturer- recommended drain intervals, AMSOIL Premium Diesel Oils remain the premium choice for diesel applications. AMSOIL Premium Diesel Oils resist viscosity loss from both shearing forces and fuel dilution to maintain their protective film strengths, providing superior protection to all diesel engines.
AMSOIL DIESEL OIL API CJ-4
OUTPERFORMS IN FIELD STUDY
OUTPERFORMS IN FIELD STUDY
With the help of Duluth, Minn.-based refuse hauling company Nordic Waste, AMSOIL put its Premium API CJ-4 Synthetic 5W-40 Diesel Oil (DEO) and four competing API CJ-4 diesel oils to the test. The objective was to prove the AMSOIL product's superior performance in Total Base Number (TBN) retention and shear stability, two characteristics that correlate to extended service life and enhanced wear protection. Results show that AMSOIL Synthetic 5W-40 demonstrated excellent TBN retention and was the only oil to remain within its specified viscosity range throughout the test interval.
Field Study Parameters
The five oils were consecutively tested in the same 2006 International 7400 rear-loading refuse hauler practicing drain intervals of 300-plus hours. Oil samples for testing were drawn every 50-75 hours. The vehicle was subjected to hauling up to 22,000 pounds of refuse up and down the steep hills of Duluth 12 hours per day. It encountered frequent stops and red-lined starts and maintained extended red-line operation during the process of unloading.
Placing further strain on each oil, the truck's 7.6L Navistar DT466 engine employs a hydraulically actuated, electronically controlled (HEUI) system that uses engine oil pressure to operate the fuel injectors. HEUI systems can raise oil pressure to as high as 3,500 psi, shearing less robust oils. Once sheared, permanent viscosity loss results, leading to increased volatility and oil consumption, deposit formation and increased engine wear.
Results - Total Base Number
Higher TBN levels well into service indicate increased levels of the additives responsible for neutralizing acids and dispersing soot. Oils that demonstrate higher TBN levels over longer periods are capable of providing increased protection throughout extended drain intervals.
As chart 1 shows, AMSOIL Synthetic 5W-40 was a top-performing oil in the area of TBN retention. It is important that the slope of the TBN trend line be gradual and span the entire life of the oil. While some oils experienced sharp declines, indicating poor performance, AMSOIL Synthetic 5W-40 maintained high TBN levels throughout the drain interval to provide effective engine protection.
Results - Shear Stability
AMSOIL Synthetic 5W-40 Diesel Oil outperformed the competing oils in the area of shear stability (chart 2). Even after 371 hours in service, it was the only oil to remain within the intended viscosity range, measuring 12.5 centistokes (cSt). In contrast, all four of the competing oils sheared out of grade before 168 hours of operation, with the Chevron and Valvoline products shearing out of grade prior to 100 hours. AMSOIL Synthetic 5W-40's increased shear stability allows for superior wear protection and long-lasting engines.
Balanced Formulation
As the test results show, today's stricter emissions regulations and advanced engine technologies make engineering a diesel oil that balances TBN retention with shear stability a serious challenge. For example, while Valvoline Premium Blue Extreme demonstrated TBN retention on par with AMSOIL, its viscosity after 93 hours was lower than the viscosity of AMSOIL Synthetic 5W-40 after 371 hours. Similarly, Shell Rotella T6 maintained viscosity well but was the poorest-performing oil in the area of TBN retention.
AMSOIL Diesel Oil - Premium API CJ-4 Synthetic 5W-40 resists viscosity loss and provides superior TBN retention throughout drain intervals up to three times original equipment manufacturer recommendations, or longer based on oil analysis. It allows operators to realize increased engine protection throughout extended drain intervals for longerlasting engines, reduced downtime and maximum cost savings.
"While the competition has been formulating their oils down to a price, we have been formulating ours up to the highest performance standards."
--Al Amatuzio--President and CEO, AMSOIL INC.
--Al Amatuzio--President and CEO, AMSOIL INC.
