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AMSOIL Synthetic Motor Oil
What are the benefits of synthetic oil? Unlike conventional oil, which is distilled from crude oil, synthetic oil is built in the laboratory. Formulators start with individual molecules, typically ethylene, and build the lubricant from the ground up. This allows formulators to use only pure, uniform molecules beneficial for lubrication. As a result, synthetic oil provides benefits conventional motor oil simply can't match, including increased wear protection, improved engine cleanliness and maximum fuel economy. While synthetic oil offers benefits for all vehicles, it's especially beneficial for modern vehicles that use technologies like turbochargers, direct fuel injection and variable-valve timing to improve fuel economy and reduce emissions. These technologies increase heat and contaminants, which can lead to engine, turbo and fuel-injector deposits that reduce performance and shorten life. For best engine protection and performance, use synthetic oil and a high-quality oil filter in combination with good fuel additives
What motor oil viscosity should I use? Automakers are increasingly using lower-viscosity oil and transmission fluid to improve fuel economy. While viscosity is defined as "resistance to flow," it's helpful to think of it as the oil's thickness. The lower the motor oil's viscosity, the more readily it flows. For example, a 0W-20 motor oil will flow faster than a 10W-40 motor oil. Oil viscosity has a direct influence on lubricating-film thickness and wear protection. Your engine is designed to use a motor oil of a specific viscosity; using an oil that's too thin can reduce wear protection, while using an oil that's too thick can increase chemical breakdown (oxidation) and reduce fuel economy. It's important to use the correct oil viscosity for your engine. T o find the right viscosity of AMSOIL motor oil for your vehicle, use our product lookup
Motor Oil Types
Motor oil isn't "one-size-fits-all." Different vehicles and equipment require different motor oil types. For example, there is gasoline motor oil, European motor oil designed for the unique needs of European vehicles, diesel oil, racing oil and natural gas engine oil. Gasoline motor oil is made specifically for gas-powered engines, which are increasingly requiring lighter-viscosity oils formulated to maximize fuel economy. European motor oil is available in a wide range of viscosities and formulations designed to meet strict European automaker specifications. Diesel oil, meanwhile, is usually available in a higher viscosity, such as 15W-40, designed to deliver extra wear protection for powerful diesel engines. Racing oil is formulated to withstand the intense environment common to high-horsepower, high-torque racing engines. Since racing oil is changed so frequently, it doesn't contain the same level of detergency additives as gasoline motor oil. Natural gas engine oil is designed to combat issues specific to natural-gas engines, like valve recession and port blockage due to carbon deposits. Make sure to select the right type of motor oil for your engine
What are the benefits of synthetic oil? Unlike conventional oil, which is distilled from crude oil, synthetic oil is built in the laboratory. Formulators start with individual molecules, typically ethylene, and build the lubricant from the ground up. This allows formulators to use only pure, uniform molecules beneficial for lubrication. As a result, synthetic oil provides benefits conventional motor oil simply can't match, including increased wear protection, improved engine cleanliness and maximum fuel economy. While synthetic oil offers benefits for all vehicles, it's especially beneficial for modern vehicles that use technologies like turbochargers, direct fuel injection and variable-valve timing to improve fuel economy and reduce emissions. These technologies increase heat and contaminants, which can lead to engine, turbo and fuel-injector deposits that reduce performance and shorten life. For best engine protection and performance, use synthetic oil and a high-quality oil filter in combination with good fuel additives
What motor oil viscosity should I use? Automakers are increasingly using lower-viscosity oil and transmission fluid to improve fuel economy. While viscosity is defined as "resistance to flow," it's helpful to think of it as the oil's thickness. The lower the motor oil's viscosity, the more readily it flows. For example, a 0W-20 motor oil will flow faster than a 10W-40 motor oil. Oil viscosity has a direct influence on lubricating-film thickness and wear protection. Your engine is designed to use a motor oil of a specific viscosity; using an oil that's too thin can reduce wear protection, while using an oil that's too thick can increase chemical breakdown (oxidation) and reduce fuel economy. It's important to use the correct oil viscosity for your engine. T o find the right viscosity of AMSOIL motor oil for your vehicle, use our product lookup
Motor Oil Types
Motor oil isn't "one-size-fits-all." Different vehicles and equipment require different motor oil types. For example, there is gasoline motor oil, European motor oil designed for the unique needs of European vehicles, diesel oil, racing oil and natural gas engine oil. Gasoline motor oil is made specifically for gas-powered engines, which are increasingly requiring lighter-viscosity oils formulated to maximize fuel economy. European motor oil is available in a wide range of viscosities and formulations designed to meet strict European automaker specifications. Diesel oil, meanwhile, is usually available in a higher viscosity, such as 15W-40, designed to deliver extra wear protection for powerful diesel engines. Racing oil is formulated to withstand the intense environment common to high-horsepower, high-torque racing engines. Since racing oil is changed so frequently, it doesn't contain the same level of detergency additives as gasoline motor oil. Natural gas engine oil is designed to combat issues specific to natural-gas engines, like valve recession and port blockage due to carbon deposits. Make sure to select the right type of motor oil for your engine
AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil
Engineered for enthusiasts seeking maximum protection and performance. Precision-formulated with cutting-edge technology and a longstanding devotion to making the world’s best motor oil. The result: engine protection that blows the doors off the highest industry standards.
Fights Engine Wear
Engineered for enthusiasts seeking maximum protection and performance. Precision-formulated with cutting-edge technology and a longstanding devotion to making the world’s best motor oil. The result: engine protection that blows the doors off the highest industry standards.
Fights Engine Wear
- 75 percent more engine protection against horsepower loss and wear1 than required by the industry standard, extending the life of vital components like pistons and cams.
- Develops a strong fluid film that keeps metal surfaces separated.
- Robust anti-wear additives further reduce wear in metal-to-metal contact regions for maximum engine life.
Signature Series Improves Startup Protection
AMSOIL provides better cold cranking viscosity, helping improve wear protection for engine components at startup
Signature Series Fights Wear
75% more engine protection against horsepower loss and wear
Signature Series Delivers Powerful Protection
AMSOIL delivers powerful protection. How good is it? An independent lab compared AMSOIL synthetic motor oil head-to-head against a leading competitor in a 100,000-mile test.P AMSOIL provided far superior wear protection and kept bearings looking like new
Signature Series Protects Against LSPI
AMSOIL Synthetic Motor Oils achieved 100% protection against LSPI
Signature Series Resists Viscosity Increase
Signature Series is barely challenged by the industry-standard testing, demonstrating only a 0.1% viscosity increase. Even when the test length is doubled, AMSOIL delivered twice the viscosity control required by the standard
Signature Series Helps Keep Engines Cleaner
AMSOIL provides better cold cranking viscosity, helping improve wear protection for engine components at startup
Signature Series Fights Wear
75% more engine protection against horsepower loss and wear
Signature Series Delivers Powerful Protection
AMSOIL delivers powerful protection. How good is it? An independent lab compared AMSOIL synthetic motor oil head-to-head against a leading competitor in a 100,000-mile test.P AMSOIL provided far superior wear protection and kept bearings looking like new
Signature Series Protects Against LSPI
AMSOIL Synthetic Motor Oils achieved 100% protection against LSPI
Signature Series Resists Viscosity Increase
Signature Series is barely challenged by the industry-standard testing, demonstrating only a 0.1% viscosity increase. Even when the test length is doubled, AMSOIL delivered twice the viscosity control required by the standard
Signature Series Helps Keep Engines Cleaner
- Fortified with a heavy treatment of detergent additives, delivering 28% more acid-neutralizing power than Mobil 1* and helping engines stay cleaner, longer.
- 50% more detergentsD to help keep oil passages clean and promote oil circulation.
- Controls heat and minimizes performance-robbing deposits.
- Superior thermal durability that resists breakdown and keeps pistons clean.
- Provides 90% better protection against sludge.
Signature Series Guards Turbos
Protects turbochargers 72% better than requiredC by the GM dexos1* Gen 2 specification
Keeps Pistons Cleaner
Even after doubling the length of the industry-standard test, AMSOIL delivered 40% cleaner pistons than required by the standard
Protects turbochargers 72% better than requiredC by the GM dexos1* Gen 2 specification
Keeps Pistons Cleaner
Even after doubling the length of the industry-standard test, AMSOIL delivered 40% cleaner pistons than required by the standard
AMSOIL Synthetic Diesel Oil
Can diesel oil safely be use in gas engines?It depends on the specifications the diesel oil carries and the recommendation of the original equipment manufacturer (OEM). The American Petroleum Institute (API) publishes its “C” category of specifications for diesel oil (currently CK-4) and its “S” category for gasoline motor oil (currently SP)
You can use diesel oil in a gas engine provided the diesel oil meets the appropriate specifications and viscosity requirements of your engine. For example, if your gas engine calls for a 5W-30 motor oil that meets the API SN specification, you can safely use a diesel oil of the correct viscosity that meets the API SN spec. For the typical gasoline application, however, a diesel oil isn’t required, and the more appropriate choice is a quality gasoline motor oil for both performance and value
Why do diesel engines need specific oil? Outside of differences in the fuel, the most notable difference between diesel and gas engines is the way each ignites the fuel. Diesel engines compress air in the combustion chamber until the temperature of the air increases enough to ignite the fuel (sprayed into the combustion chamber by the injector). Gasoline engines, on the other hand, use spark plugs that ignite a mixture of fuel and air at just the right time
Diesel oil is formulated differently than gasoline oil in order to address issues specific to diesel engines, including higher engine temperatures, oxidation rates, soot levels and deposits. Find the best AMSOIL synthetic diesel oil for your application in the Product Lookup. AMSOIL diesel fuel additives also provide benefits designed to keep diesel engines operating at top performance
How often should you perform a diesel oil change? Refer to the vehicle owner’s manual for specific oil-change recommendations. AMSOIL synthetic diesel oils may be used beyond the OEM-recommended interval based on the service-life recommendations on the data sheets or with oil analysis. In addition, AMSOIL offers a full line of premium synthetic gear oil and transmission fluid to keep your diesel running at peak performance
Can diesel oil safely be use in gas engines?It depends on the specifications the diesel oil carries and the recommendation of the original equipment manufacturer (OEM). The American Petroleum Institute (API) publishes its “C” category of specifications for diesel oil (currently CK-4) and its “S” category for gasoline motor oil (currently SP)
You can use diesel oil in a gas engine provided the diesel oil meets the appropriate specifications and viscosity requirements of your engine. For example, if your gas engine calls for a 5W-30 motor oil that meets the API SN specification, you can safely use a diesel oil of the correct viscosity that meets the API SN spec. For the typical gasoline application, however, a diesel oil isn’t required, and the more appropriate choice is a quality gasoline motor oil for both performance and value
Why do diesel engines need specific oil? Outside of differences in the fuel, the most notable difference between diesel and gas engines is the way each ignites the fuel. Diesel engines compress air in the combustion chamber until the temperature of the air increases enough to ignite the fuel (sprayed into the combustion chamber by the injector). Gasoline engines, on the other hand, use spark plugs that ignite a mixture of fuel and air at just the right time
Diesel oil is formulated differently than gasoline oil in order to address issues specific to diesel engines, including higher engine temperatures, oxidation rates, soot levels and deposits. Find the best AMSOIL synthetic diesel oil for your application in the Product Lookup. AMSOIL diesel fuel additives also provide benefits designed to keep diesel engines operating at top performance
How often should you perform a diesel oil change? Refer to the vehicle owner’s manual for specific oil-change recommendations. AMSOIL synthetic diesel oils may be used beyond the OEM-recommended interval based on the service-life recommendations on the data sheets or with oil analysis. In addition, AMSOIL offers a full line of premium synthetic gear oil and transmission fluid to keep your diesel running at peak performance