Why use AMSOIL oil?
Because AMSOIL oil is the best! Extensive testing against 10 competing conventional, synthetic and synthetic blend motor oils proves AMSOIL oil outperforms all competitors and provides consumers with the following benefits: Testing details AMSOIL Synthetics provides low temperature fluidity for fast, dependable winter starts and cold start protection. They exceed the most demanding world-wide performance standards and meet or exceed all warranty requirements for all domestic and imported vehicles, both turbo-charged and & non-turbo-charged. Check AMSOIL motor oil comparison tests against 10 conventional petroleum and synthetic oil brands.
Wear prevention is an engine oils primary and most important job. No other motor oil protects against wear better than AMSOIL. PERIOD!
The Company of Firsts
AMSOIL has a documented history of leadership and innovation.
* First to develop an API-rated 100 percent synthetic motor oil.
* First to introduce the concept of “extended drain intervals” with a recommended 25,000-mile/1-year drain interval.
* First U.S. company to utilize the NOACK volatility test as a standard of performance excellence.
* First to produce synthetic motor oils for diesel engines, racing engines, turbo and marine engines.
* First to introduce synthetic oils that legitimately contribute to improving fuel efficiency.
* First to manufacture synthetic gear lube for automotive use.
* First to manufacture a 100:1 pre-mix synthetic 2-cycle oil.
* First to manufacture a synthetic automatic transmission fluid (ATF) for automotive use.
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Here are some examples of AMSOIL products
PRODUCT DESCRIPTION
AMSOIL Signature Series 0W-30 Synthetic Motor Oil 
is the industry benchmark in lubrication technology. Engineered with the world’s finest synthetic base oils and high performance additives, AMSOIL Signature Series 0W-30 is designed for those who demand the absolute best in motor oil performance. The exclusive “extended drain” formulation delivers superior engine protection and maximum fuel economy. AMSOIL Signature Series 0W-30 is a premium grade synthetic motor oil that exceeds the requirements of modern, high-performance engines and older engines. It replaces other 0W-30, 5W-30 and 10W-30 motor oils and consistently outperforms competitive conventional and synthetic motor oils.
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.
Extends Drain Intervals
AMSOIL Signature 0W-30 Synthetic Motor Oil lasts much longer in service than conventional oils. Its unique synthetic formulation and long drain additive system resist oxidation and neutralize the acids that shorten the service life of other oils. AMSOIL Signature Series 0W-30 delivers the best possible engine protection, cleanliness and performance over extended drain intervals, reducing vehicle maintenance and waste oil disposal costs.
Maximizes Fuel Efficiency
The lightweight molecular structure of AMSOIL Signature Series 0W-30 Synthetic Motor Oil reduces energy loss from the “drag” common to high viscosity oils. It is fortified with additives that enhance its friction-reducing properties to help further improve fuel efficiency.
Reduces Wear
AMSOIL Signature Series 0W-30 Synthetic Motor Oil contains specialized anti-wear technology. Its durable, high temperature film strength effectively separates metal surfaces to reduce wear even under the most grueling conditions. Tests prove that AMSOIL Signature Series 0W-30 provides better protection against wear than other motor oils (see graph). AMSOIL Signature Series 0W-30 helps engines last longer.
Resists Heat, Reduces Oil Consumption and Emissions
AMSOIL Signature Series 0W-30 Synthetic Motor Oil is thermally stable with a strong resistance to high temperature volatility (burn-off). It is heavily fortified with detergent and dispersant additives designed to prevent sludge deposits and keep engines clean. Low volatility and clean operation reduce oil consumption and emissions.
PRODUCT DESCRIPTION
AMSOIL Series 3000 100% Synthetic 5W-30 Diesel Oil (HDD)
delivers extraordinary lubrication in both diesel and gasoline engines found in commercial, fleet and personal vehicles. By combining the industry’s premier synthetic technology with AMSOIL premium additives, AMSOIL HDD exceeds the higher performance demands of modern engines. It withstands the stress of higher heat, higher acid levels and excessive soot loading found in EGR-equipped engines. AMSOIL Series 3000 Synthetic 5W-30 Diesel Oil consistently outperforms conventional and synthetic diesel oils for long-lasting performance and protection.
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.
Extends Drain Intervals
AMSOIL HDD can extend drain intervals far beyond those recommended for conventional oils. Its unique synthetic formulation and long drain additive system deliver the best possible engine protection, cleanliness and performance over extended drain intervals, reducing vehicle maintenance and waste oil disposal costs.
Maximizes Fuel Economy
AMSOIL Synthetic 5W-30 Heavy Duty Diesel Oil is energy efficient for reduced fuel costs. Its low viscosity minimizes “drag” associated with high viscosity oils, allowing the engine to operate more freely, maximizing power and fuel economy.
Unsurpassed Protection Against Engine Wear
In the Four-Ball Wear Test (ASTM D-4172B) AMSOIL HDD demonstrated better anti-wear performance than competitive petroleum and synthetic oils. Even under high temperatures and pressures, its superior film strength and anti-wear additives help prevent metal-to-metal contact. AMSOIL HDD reduces ring wear, cylinder bore polishing, oil consumption and valve train wear for improved engine life and lower maintenance costs.
Controls Soot Thickening and Wear
AMSOIL Synthetic 5W-30 Heavy Duty Diesel Oil is heavily fortified with detergent/dispersant additives and is naturally resistant to soot. It keeps soot particles suspended independently, preventing them from attaching together to form larger, wear-causing particles. Viscosity increase is minimized and soot related wear is controlled.
Reduces Oil Consumption and Emissions
AMSOIL HDD loses only 7.6% of its mass to high temperature volatility (evaporation) in the NOACK test, outperforming all conventional oils. Because less oil vapor passes into the combustion chamber, oil consumption and emissions are reduced. Additionally, lower volatility helps AMSOIL HDD retain its viscosity after high temperature service for continued dependable protection and excellent fuel economy.
Excels in Extreme Temperatures
AMSOIL Synthetic 5W-30 Heavy Duty Diesel Oil resists thermal (heat) breakdown, oxidation and sludge formation better than conventional oils. And unlike conventional petroleum oils, AMSOIL HDD contains no wax. It stays fluid down to -50°C (-58°F) for improved cold temperature oil flow, reduced bearing wear and easier starting.
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