Which is the Best Synthetic Motor Oil?
Although you might know that synthetic oils outperform conventional oils, you might not understand why. The differences begin at the molecular level.
While petroleum base oils are refined, synthetic base oils are manufactured which allows them to achieve a higher performance level. Conventional lubricants are refined from crude oil. Contaminating elements such as sulfur, nitrogen, oxygen and metal components such as nickel or vanadium are inherent to crude oil and cannot be completely removed through the refining process.
The oil refining process separates the various types of molecules in the oil by weight, leaving molecules similar in weight but dissimilar in structure, reducing performance.
Synthetic oil in the other hand is chemically engineered for a certain molecular composition with a tailored and uniform structure. For this reason they don’t contain the impurities and molecular irregularities inherent to conventional oils. Synthetics’ pure, uniform molecular structures impart properties that provide wear protection, extreme-temperature performance and fuel efficiency conventional lubricants just can’t touch – all of which helps you save money with vehicles that run better and last longer.
AMSOIL synthetic lubricants are chemically engineered to form pure lubricants. They contain no contaminants or molecules that don’t serve a designed purpose. Their versatility and pure, uniform molecular structures impart properties that provide better friction-reduction, optimum fuel efficiency, maximum film strength and extreme-temperature performance conventional lubricants just can’t accomplish.
Why AMSOIL?
AMSOIL is an independently owned company, which allows us the freedom to keep formulating products based on performance instead of price. The end result is a line of full-synthetics lubricants that helps you push the limits of vehicle performance, power and speed.
But we are not just engineers, chemists and manufacturers, we’re also racers, gear-heads and thrill-seekers. We love to drive around on our vehicles and keep them fine-tuned, getting their best performance. Our time behind the wheel and under the hood helps us experience firsthand the toll power, speed and performance take on engines. That perspective helps us formulate some of the best synthetic lubricants on the market.
AMSOIL shields your automobile with 75% more engine protection against horsepower loss and wear than required by a leading industry standard*, extending the life of vital components like pistons and cams.
AMSOIL Signature Series Synthetic Motor Oil keeps your engine 5x cleaner than conventional oil can.
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WORLD-CLASS WEAR PROTECTION
Testing AMSOIL synthetic lubricants in the most demanding environments is our industry trademark. We push our lubricants to the limit in our state-of-the-art mechanical test lab, in real-world field trials and in the world’s most demanding racing vehicles in an effort to develop the best synthetic oil available. The result is a complete product line that performs as advertised and helps you harness the full potential of your vehicles and equipment.
FUEL | MAXIMIZE FUEL ECONOMY
The base oils used in conventional oils contain molecules of different sizes and weights as well as unwanted materials, like wax. This typically requires more energy to circulate throughout your engine, which can reduce fuel economy.
TESTED AND PROVEN PERFORMANCE
We stand behind our product claims. See all performance test results.
AMSOIL synthetic motor oils are formulated using molecularly uniform synthetic base oils that slip easily over one another and are free of unwanted materials. They help reduce energy lost to friction and maximize fuel economy.
OIL | 38% LESS OIL CONSUMPTION
If enough motor oil is consumed, eventually there may not be enough to reach all the complex parts of your engine, which can potentially cause damage.
AMSOIL Signature Series 5W-30 showed 38% less oil consumption* than the tested conventional oil, requiring less-frequent top-offs.
*Supported by NOACK Volatility test (ASTM D5800)
COLD
36% EASIER AND FASTER COLD STARTS
When the temperature drops, motor oils thicken and move slower, causing parts of your engine to remain unprotected for a short period of time. AMSOIL is more fluid at cold temperatures than the tested conventional oil, giving you 36% easier and faster cold starts*. This means that it can reach vital components faster, providing more immediate engine protection and reduced wear.
WATCH THE COLD POUR COMPARISON
*Supported by Cold Crank Simulator test (ASTM D5293)
HOT
5 TIMES CLEANER ENGINES IN HOTTER CONDITIONS
In order to keep on pace with the increasingly strict fuel economy standards, vehicle manufacturers are designing engines differently, causing them to run hotter than ever before. The average operating temperature is up to 235°F, and even higher under heavy loads. This heat can quickly break down the oil and cause oxidation, sludge and deposits.Recent tests show AMSOIL keeps engines 81% cleaner* (5 times cleaner) than conventional oil by better resisting the formation of deposits.
*Supported by TEOST 33C test (ASTM D6335)
DEVOTED TO PERFECTION.
AMSOIL guarantees the performance of its products, so you can be confident they perform as advertised. AMSOIL introduced the world’s first API-qualified synthetic motor oil and has since introduced a full line of industry firsts. For more than 40 years, AMSOIL synthetic lubricants have proven themselves in the lab, on the racetrack and on the highway.
