AMSOIL Heavy Duty Synthetic Diesel Oils

Be prepared for winter. All of the AMSOIL synthetic diesel oils have significantly lower pour points than conventional diesel oils. Right away you can ease cold weather starting while providing vital start-up lubrication to prevent engine wear.
Also check out our Diesel Fuel Concentrate and Cold Flow Improver to combat low sulfur and freezing fuel problems as well.

AMSOIL Series 3000 SAE 5W-30 Synthetic Heavy Duty Diesel Oil

The Premium AMSOIL Synthetic Engine Oil

Best Choice: Fuel efficient formula for both gasoline and diesel fleets. Contains the most robust additive package of all AMSOIL Motor Oils. Delivers better wear protection than other popular diesel oils and effectively reduces fuel consumption. AMSOIL Series 3000 5W30 100% Synthetic Diesel oil resists oil breakdown from heat, blow-by chemicals and oxygen up to ten times longer than conventional oils. It provides excellent shear stability, retaining its protective viscosity in conditions that cause conventional oils to fail. Its high 12 TBN controls acids from combustion blow by and EGR, while its superior dispersancy and detergency characteristics effectively control EGR soot thickening and reduce wear. Recommended for all 2006 and prior turbocharged engines. See expanded section on this product. Product Code: HDD Order Now Online in our NEW AMSOIL Online Store

This is the recommended choice for 2006 and prior Diesel Engines.

Customers who want to use the very best in their personal gasoline powered vehicles, Classics requiring adequate ZDDP levels, work trucks and class 8 vehicles, start with this. Tested to increase mileage up to 8.2% Please read more on this robust and energy efficient motor oil.
Also see our oil analysis at 92,000 miles (4th oil change on car) with 11,000 on oil. The AMSOIL HDD retains more ZDDP than most competitors contain off the shelf. There are millions of miles of data at AMSOIL HQ proving that these oils with extended intervals will not cause harm to emmissions systems. AMSOIL will continue to have these oil available for 10 more years as allowed by the EPA.

(See this products actual cost savings in a fleet of 1996 Kenworth trucks)
(See how this product performs over 212,000 miles)

AMSOIL SAE 15W-40 Synthetic Diesel Oil

AMSOIL's Best Selling Product!

If you want maximum protection while having the ability to significantly reduce operating costs and downtime please examine this product more here. Be sure to examine the service life. (This is also an excellent choice for engines with over 500,000 miles. Please call for more details. Engines with consumption problems can benefit from this and the ARO 20W50)

NEW - AMSOIL SAE 5W-40 Synthetic Diesel Oil

SAE 15W-40 Synthetic Blend Diesel Oil

Synthetic 10W30/SAE 30 Heavy Duty Diesel Oil

Classic car owners concerned about the lack of ZDDP in current motor oils should take note.

AMSOIL Diesel and several AMSOIL Gas Engine oils which will contain the needed ZDDP anti-wear additives for at least the next 10 years. Most of you are looking for CI4+ rated oils for older engines and you have come to the right place. Cam or lifter wear should never be a issue when using our 100% synthetic lubricants which are not labeled for ILSAC GF-4 which is the engine test category designed to protect modern emission systems.

Based on concerns from Studebaker and MG Club members, the best two oils for consideration would be the original AMSOIL product - AMO 10W40 (click for data) and the one I use in everything, HDD 5W30 Series 3000 Diesel & Gasoline engine oil. This oil will be used exclusively in our 55 Studebaker to show actual zinc and phosphorus after operation for 10,000 miles. Currently in my Mini Cooper S, I am using the HDD and am at 96,000 miles on my 4th oil change. A recent oil analysis (will be posted here) shows current Phosphorus levels at 1169ppm, Zinc 1452 and Calcium at 3525. With 11,200 miles on this sample my iron rates are at an all time low = 15ppm. Call me at 800-579-0580 to get what you need!

For your street rod or vintage vehicle trust the original, trust the one designed for the purpose - the consumer in mind and the only one with a guarantee - AMSOIL.

Diesel oils save large truck owners even more with extended intervals of 50K and beyond using our By-Pass filtration systems.

Diesel users are even more impressed with the extreme fuel economy. It's money that stays in your pocket. See Service Life on data sheets in our product listings. Add years to your engine life and put an end to waste. Why not start using AMSOIL now? Buy wholesale and find out AMSOIL actually costs less than you were told. Or perhaps take advantage of our Dealer network. Rely on AMERICAN Produced Motor Oils.

Unsurpassed Diesel Engine Protection

Diesel engine emissions have been an ongoing environmental concern for the past few decades, and the United States, Europe and Japan have responded to demands to reduce harmful particulates and nitrogen oxides (NOx). In the U.S., particulate and NOx levels were first regulated in 1988, with regulations becoming increasingly stringent through the years. In fact, 1988 standards set NOx and particulate levels at 14.4 g/kWhr (grams/kilowatts – hour) and 0.8 g/kW-hr respectively, while 2010 standards have been set at 0.27 g/kW-hr and 0.013 g/kW-hr respectively. By 2010, diesel engines will be considered “clean,” but getting there will require sulfur-free fuel, improved in-cylinder combustion, exhaust after-treatment, vehicle design changes and diesel oils that are compatible with after-treatment systems.

Between the years 1988 and 1991, emission standards were met by improving in-cylinder combustion through the use of unit injectors, electronic controls, controlled air swirl, improved combustion bowl design, reduced piston crevice volume, turbo-charging, air inter-cooling and reductions in oil consumption.

The year 1991 also saw the use of high top rings to lower particulate emissions. By 1998, retarded fuel injection timing was introduced to meet increasingly stringent NOx emission standards. High top rings and retarded fuel injection timing increased soot loading on the oil, leading to the introduction of API diesel oil category CH-4 in order to prevent viscosity increases and increased wear due to soot.

In order to meet 2002 emission standards, most engine manufacturers introduced exhaust gas recirculation (EGR) engines, which recirculate a portion of the exhaust to the engine’s combustion chamber, lowering peak combustion temperature. Although EGR engines effectively reduce emissions, they also run hotter and introduce higher levels of soot and acid into the oil, leading to increased wear, increased oil viscosity and shorter oil drain intervals.

The API CI-4 diesel oil specification was introduced in December 2001 to protect against the higher temperatures and increased levels of acids, soot and oxidation associated with EGR engines, while some manufacturers released their own diesel oil performance specifications in order to assure optimum protection for their equipment. Mack released its stringent EO-N Premium Plus High Performance Diesel Engine Oil specification in the spring of 2002, then upgraded it to EO-N Premium Plus 03 in April 2003 due to soot-related oil thickening and shear that occurred after a certain length of highway time.

API issued an upgrade to its CI-4 specification, CI-4 PLUS, in September 2004 in order to provide improved oxidation resistance, shear stability, acid neutralization and soot dispersancy for EGR engines. CI-4 PLUS certified diesel oils also meet most of the individual manufacturer issued specifications and are backward compatible with older diesel oil specifications and engines. CI-4 PLUS oils must first meet the original requirements of CI-4, with the additional requirements of passing the 90-Pass Shear Stability Bench Test and the Mack T-11 engine test, a more stringent upgrade of the Mack T-8E soot-viscosity test required for CI-4.

In order to meet 2007 particulate standards, exhaust after-treatment devices such as particulate filters (DPF’s) and continuously regenerative traps (CRT’s) will be incorporated into diesel engines, creating new challenges for diesel oils. AMSOIL Synthetic Diesel Oils are ahead of the curve and ready to meet the challenges of tomorrow.

AMSOIL Synthetic Diesel Oils surpass the most stringent modern diesel oil specifications, including CI-4 PLUS and EO-N Premium Plus 03. Formulated with top-of-the-line synthetic base stocks and advanced additive packages, AMSOIL Synthetic Diesel Oils effectively control the increased soot and acid levels associated with EGR units, while remaining shear stable at high temperatures, avoiding the damaging sludge and deposit build-up that contribute to decreased fuel efficiency, corrosion and accelerated engine wear. The drain intervals of AMSOIL diesel oils may be extended by oil analysis in EGR-equipped engines.

Emission control technology has increased soot loading of diesel oils, prompting original equipment manufacturers to shorten drain interval recommendations. Even at increased soot levels, AMSOIL Synthetic Diesel Oils continue to offer outstanding wear protection. Soot and iron wear levels were measured over 900 hours of operation in a 2002 EGR-equipped Mack LE613-Rear Loader running AMSOIL 15W-40 Synthetic Heavy Duty Diesel and Marine Motor Oil. As seen in the graph, even at increased soot levels, the rate of engine wear remained well below the Mack condemnation limit of 0.5 parts per million per hour (ppm/h).

Owner/Operator Experiences Significant Fuel Savings with AMSOIL

Dear AMSOIL:

I have been using AMSOIL 15W40 AME Diesel Engine Oil and the AMSOIL Dual-Guard By-Pass Filtration System, along with used oil analysis, for nearly three years. My 1997 Mack CH613 had 176,000 miles on it when I began using AMSOIL motor oil and the Dual-Guard System. At the time I bought this truck, the company I am leased to bought a number of identical trucks for their fleet. All of these trucks operate in much the same way, including operating environment, type of haul, etc. These trucks also have a dash mounted digital display of the lifetime average fuel economy. At this time my truck’s average is 6.78 MPG, and the company trucks range from 5.8 to 6.2 MPG. The difference between 6.78 and a fleet average of 6 MPG is over 11 percent. That is significant savings, and the major difference here is I use AMSOIL Diesel and the company trucks use conventional oil! Not only do I save on fuel but I buy significantly less diesel oil!

Both the full flow and by-pass filters are changed regularly, and at each 20,000 mile interval, an oil sample is taken to monitor the oil’s condition. Currently, I have 412,000 miles on this truck, the last 236,000 without an oil change. The oil analysis from Oil Analyzers, Inc. reports the oil is suitable for continued use and the engine runs great.

Mike Geho
Owner/Operator and AMSOIL Dealer

Use Diesel Fuel Additive Concentrate to Restore Fuel Lubricity

Fuel sulfur regulation began in October of 1993, decreasing from 5,000 ppm to 500 ppm in order to meet 1994 particulate regulations.
In order to meet 2007 particulate regulations, 15 ppm ultra low sulfur diesel (ULSD) will be implemented by June 2006. While reducing the level of sulfur in diesel fuel effectively reduces emissions, it also reduces lubricity, increasing wear on fuel pumps and injectors. AMSOIL Diesel Fuel Additive Concentrate (ADC) effectively restores lubricity, to protect pumps and injectors from wear. In addition, Diesel Fuel Additive Concentrate effectively reduces emissions and provides outstanding fuel system cleanliness and corrosion and sludge inhibition.
ADC keeps passages and orifices open and allows improved fuel flow, fuel atomization and combustion for improved fuel economy and power.

• Improves fuel economy
• Increases fuel stability
• Improves cold fuel flow
• Controls injector wear
• Extends fuel pump and injector life
• Reduces emissions
• Improves cold startability

Turbodiesel Owners

Rely on AMSOIL Synthetic Diesel Engine Oils to cut costs and most of all, reduce expensive down time. Our synthetic diesel oil is specifically designed to neutralize soot and oxidants which lead to corrosion and viscosity fluctuations. Use Oil Analysis and extend your expensive diesel changes at least twice as long, cut fuel use, and add years to your engine. Trust 32 years of AMSOIL satisfied customers! Start with the AMSOIL AME Diesel Oil which is our best selling product.

The Amsoil Heavy Duty Diesel 5W30 resists breakdown from heat, oxygen and blowby chemicals up to ten times longer than conventional oils. More importantly, the HDD resists forming sludge and varnish deposits which causes decreased fuel efficiency and wear.
The main difference between this product and all others is it retains its viscosity over extended drain intervals rather than thicken.

In addition to the above, the AMSOIL HDD 5W30 Diesel provides better protective film at extreme temperatures than currently available SAE 40 oils. You really get what you pay for with this product. We sell this product to more owner operators as they are more concerned about the life, long term expenses and efficiency of their engines not to mention the advantages of less down time thanks to extended intervals.

Although the AME 15W40 Synthetic Diesel oil is AMSOIL's best selling product by a wide margin, the AMSOIL HDD Series 3000 5W30 Synthetic Diesel oil is a better product. It does cost significantly more but it's the best product.
Most of my customers start with the 15W40 as that is what the manual calls for, the climate demands that or it's the choice as they run heavy loads. The 5W30 confuses many diesel owners as they believe it may be too light of a weight for their use, but because of the synthetic nature or our product there is no compromise to any wear surface. the intense sheer strength and lubricity of this product is the ultimate solution to modern high temp, excessive load, turbocharged diesel engines. If you own your diesel, want to increase the mileage and serviceable life, the 5W30 HDD is the best choice. Call 1-800-579-0580 for pricing.

We meet your diesel CI-4+ requirement and EGR compatibility. See our data sheets.

Class 8 Savings trial - Increase diesel mileage by 8-1/2%!

5W30 HDD and Bypass reduces oil use from 480 to 40 quarts!

Ford Powerstroke Recommendations - Specific Vehicle Information

Dodge Cummins Recommendations - Specific Vehicle Information

Chevy/GMC Duramax Recommendations - Specific Vehicle Information

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Top 6 in sales.
1-800-579-0580

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