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Corporate Announcement
Premium API CJ-4 Synthetic 15W-40 Diesel Oil

AMSOIL Synthetic 15W-40 Diesel Oil (DME) is the premium choice for API CJ-4 emission-quality diesel oil required by model-year 2007 and newer diesel engines. It delivers extraordinary lubrication in diesel engines found in commercial, fleet and personal vehicles. Built with the latest additive and synthetic base oil technology, AMSOIL Premium Synthetic 15W-40 Diesel Oil exceeds the higher performance demands of modern engines. It withstands the stress of heat, soot and acids to help prevent deposits, corrosion and wear. AMSOIL, the leader in automotive synthetic lubrication, produced the world’s first API-qualified synthetic motor oil in 1972. Trust the extensive experience of AMSOIL, The First in Synthetics,® to do the best job protecting your engine. More Information.

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What is a Synthetic Oil?
What is a Synthetic Motor Oil? The Difference Between Synthetic and Conventional Oils Engines, transmissions and other components contain hundreds of moving parts. Though the metal surfaces of these parts look very smooth, they are actually filled with microscopic peaks and valleys. When a peak on one surface touches its mating surface, it causes damage. The damage may be abrasive, like scratching, or adhesive, in which a portion of one surface sticks to its mating surface, leaving a pit in the original and a lump on he second. When the damage caused by contact is severe, it causes failure, which is usually a sudden event. When it is mild, it causes, wear a long-term event. Wear cannot be eliminated altogether, but it can be slowed through proper lubrication. Failure prevention and wear reduction are the primary functions of lubrication. Wear Reduction Lubricants inhibit friction and wear by providing a film that physically separates surfaces so that when they move, the mating surfaces don't touch. The lubricant's viscosity, technically its resistance to flow, and often thought of as its "thickness", provides the lubricants' ability to separate surfaces. Viscosity is the single most important characteristic of a lubricant. Cooling Most lubricants also cool the components they serve. For example, the crankshaft, main and connecting rod bearings, camshaft bearings, timing gears, pistons and lower engine components depend on motor oil for cooling. Lubricants pick up heat from components and carry it to an area, such as the engine's crankcase, where the heat transfers to the surrounding air. Other Lubricants also seal, clean, and perform other functions. Conventional vs. Synthetic Lubricants Conventional lubricants are refined from crude oil. Refining is a process of physically separating light from heavy oil fractions. Crude oil is a natural substance. It contains millions of different kinds of molecules. Many are similar in weight but dissimilar in structure. Because refining separates products by weight, it groups molecules of similar weight and dissimilar structure, so refined lubricants contain a wide assortment of molecules. However, not all of these molecules are beneficial to the lubrication process. Some of the molecules found in refined lubricants are detrimental to the lubricated system or to the lubricant itself. For example, paraffin, a common refined lubricant component, causes refined lubricants to thicken and flow poorly in cold temperatures. Some refined lubricant molecules also may contain sulfur, nitrogen and oxygen, which act as contaminants and invite the formation of sludge and other by-products of lubricant breakdown. Synthetic lubricants are chemically engineered to form pure lubricants. Synthetic lubricants contain no contaminants or molecules that "don't pull their own weight." Because synthetics contain only smooth lubricating molecules, they slip easily across one another. On the other hand, the potpourri of jagged, irregular and odd-shaped molecules of refined lubricants don't slip quite so easily. The ease with which lubricant molecules slip over one another affects the lube's ability to reduce friction, which in turn, affects wear control, heat control and fuel efficiency. Synthetics are superior. Uniformity also helps synthetics resist thinning in heat and thickening in cold, which helps them protect better over a system's operating temperature range. Synthetic lubricants are designalbe; they may be made to fulfill virtually every lubricating need. Does Conventional Oil Offer Any Advantage? Petroleum oils have met our lubrication needs for more than a hundred years. They provide adequate lubrication and protection in many applications and they usually cost less to purchase than synthetics. However, because synthetic lubricants may be used for longer drain intervals than conventional lubes, and components lubricated with synthetics tend to require fewer repairs than those lubricated with conventional lubes, people who use synthetics often end up spending less on lubrication and vehicle maintenance than those who use conventional lubricants. The savings to industrial and commercial users are well-documented by AMSOIL and others. AMSOIL Synthetic Motor Oils are the finest lubricants available today. Because AMSOIL uses only the highest-quality base stocks and additive chemicals, AMSOIL Synthetic Motor Oils provide unsurpassed protection for virtually every application.

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Frequently Asked Questions
Here are some frequently asked questions on the Amsoil Corporate website: http://www.amsoil.com/frequent.aspx?zo=1495622

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The History of Amsoil Products
Background Since the introduction of AMSOIL synthetic motor oil in 1972, AMSOIL has advocated extended oil drain intervals with their synthetic motor oils. No matter whether you do your own service work or have it done elsewhere, AMSOIL can save you time and money while offering superior protection for your equipment. AMSOIL makes synthetic lubricants for almost any application....motor oils, transmission fluids, gear lubes, 2-cycle oils, racing oils, hydraulic oils, fuel additives, to name a few. They also have the new Ea(absolute efficiency) oil and air filters made with nanofiber technology, offering the most efficient filters on the market today. Take a look at AMSOIL's whole filtration spectrum. AMSOIL has over 200 products to date which cover almost any application.

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10 advantages to using Amsoil Products
10 Advantages to using AMSOIL: 1. Offers the latest technology for today's engines 2. Extends oil change intervals dramatically 3. Less oil used means less oil disposed of 4. Increases fuel economy 2-5% 5. Reduces engine temperatures by as much as 25 degrees 6. Provides dependable cold start protection 7. Offers the best filtration technology on the market 8. Reduces oil consumption and harmful emissions 9. Provides state of the art additive systems and base oil stocks 10. Save you time and money in the long run