Amsoil motor oil, engine oil is the best sythetic motor oil. 5w 30, 0w 30, 20w 50, 15w40, 5w20, 10w 40, 5w 40 premium diesel or 4 stroke engines.

The industry benchmark in lubrication technology. 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 and exceeds the requirements of modern, high performance and older engines.

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"API" MOTOR OIL TEST COMPRARISON opens a new window. 

AMSOIL Introduces Signature Series Synthetic 0W-30 Motor Oil opens a new window. 

AMSOIL INC. of Superior , Wisc. has introduced a premier motor oil with a new, personal image. Supplemented with a proprietary ashless antiwear system for improved heat and viscosity control and boasting a 10 percent increase in TBN (13.2), new Signature Series 0W-30 sets the standard for protection and performance. Personally endorsed by AMSOIL founder and president Al Amatuzio, each bottle bears his signature and describes how he developed the first API qualified synthetic motor oil, thereby launching the synthetic motor oil industry.

Engineered with the world's finest synthetic base oils and high performance additives, 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, replacing other 0W-30, 5W-30 and 10W-30 motor oils.

Extends Service Life
AMSOIL Signature Series 0W-30 Synthetic Motor Oil lasts much longer in service than conventional oils.
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.  

Reduces Wear
AMSOIL Signature Series 0W-30 Synthetic Motor Oil contains specialized anti-wear technology so that 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).  

Provides Outstanding Cold Flow Properties
Unlike conventional oils, AMSOIL Signature Series 0W-30 contains no wax. Its exceptional -60°F cold flow properties ease starting and reduce bearing wear.



 


Signature Series 0W-30 Motor Oil
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.
Product Code: SSO
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SAE 0W-20 Motor Oil
AMSOIL Motor Oil 100% Synthetic 0W-20 delivers extraordinary lubrication for automotive gasoline engines. AMSOIL combined the industry premier synthetic technology and additives into a light viscosity formulation that withstands high temperatures and delivers outstanding fuel economy and cold temperature performance.
Product Code: ASM
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SAE 5W-30  Motor Oil
AMSOIL Motor Oil 100% 5W-30 is designed to provide maximum benefits in gasoline-fueled engines. Exceeds the most demanding world-wide performance standards and meet warranty requirements for all domestic and imported passenger car engines, both turbo-charged and non-turbo-charged. Up to 25,000-mile or 1-year drain intervals.
Product Code: ASL
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SAE 10W-30 Motor Oil
AMSOIL 100% Synthetic 10W-30 Motor Oil is designed to provide maximum benefits in gasoline-fueled engines. AMSOIL 10W-30 resists high temperature degradation and flows freely in cold conditions for superior protection against engine wear. AMSOIL 10W-30 also provides maximum power and improved fuel efficiency. Up to 25,000-mile or 1-year drain intervals.
Product Code ATM
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AMSOIL Racing and High Performance Oils

AMSOIL High Performance synthetic motor oils provide plenty of TBN and dispersant protection to control acid and soot in diesel engines, They also provide high levels of key anti-wear chemistries for ultimate protection of high-stress automobile engines.



High Performance 10W-40 Motor Oil
AMSOIL High Performance Synthetic 10W-40 Motor Oil is designed to provide maximum benefits in gasoline and diesel engines.
Product Code: AMO
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 High Performance 20W-50 Motor Oil
AMSOIL High Performance Synthetic 20W-50 Motor Oil is designed to provide maximum benefits in gasoline and diesel engines.
Product Code: ARO
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SAE  60 Super Heavyweight Racing Oil 
AMSOIL  SAE  60 Synthetic Super Heavy Weight Racing Oil (AHR  ) is designed for high horsepower racing engines, typically supercharged and alcohol-burning or nitro-fueled, and requiring a high viscosity oil to resist the thinning effects of fuel dilution.
Product Code: AHR 
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Excellent for use in high RPM, high temp racing and high-performance applications under severe conditions. Ensures critical engine components are protected for the duration of the race. Reduces friction for max power and cooler engine temperatures, resulting in improved lap times and longer-lasting equipment.

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Excellent for use in high RPM, high temp racing and high-performance applications under severe conditions. Ensures critical engine components are protected for the duration of the race. Reduces friction for max power and cooler engine temperatures, resulting in improved lap times and longer-lasting equipment.
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Excellent for use in high RPM, high temp racing and high-performance applications under severe conditions. Ensures critical engine components are protected for the duration of the race. Reduces friction for max power and cooler engine temperatures, resulting in improved lap times and longer-lasting equipment.

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AMSOIL XL Motor Oils
 
Extended Life 5W-20, 5W-30,10W-30 & 10W-40 Synthetic Motor Oils.

Security Beyond 3,000 Miles 

AMSOIL XL Motor Oils are made to deliver 7,500 miles or six months of service between oil changes. These oils provide outstanding wear protection and increased power, performance and fuel economy in high and low temperatures.  

XL 5W-20 Motor Oil  AMSOIL Synthetic XL 5W-20 motor oil is specially formulated to deliver 7500 miles or six months of service between oil changes. This oil provides outstanding wear protection and increased power, performance and fuel economy in high and low temperatures.
Product codes: XLM

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  XL 5W-30 Motor Oil
AMSOIL Synthetic XL 5W-30 motor oil is especially formulated to deliver 7500 miles or six months of service between oil changes. This oil provides outstanding wear protection and increased power, performance and fuel economy in high and low temperatures.
Product codes: XLF
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XL 10W-30 Motor Oil
AMSOIL Synthetic XL 10W-30 motor oil is especially formulated to deliver 7500 miles or six months of service between oil changes. This oil provides outstanding wear protection and increased power, performance and fuel economy in high and low temperatures.
Product codes: XLT
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  XL 10W-40 Motor Oil
AMSOIL Synthetic XL 10W-40 motor oil is especially formulated to deliver 7500 miles or six months of service between oil changes. This oil provides outstanding wear protection and increased power, performance and fuel economy in high and low temperatures.
Product codes: XLO
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AMSOIL Synthetic Diesel Oils

Built with heavy-duty dispersant/detergent additives, its 12 TBN chemistry neutralizes acids and controls soot thickening from EGR and blow-by to protect against corrosion, cylinder bore polishing (wear) and varnish/sludge deposits.

AMSOIL Synthetic 5W-40 Premium Diesel Oil (DEO)

The premium choice diesel oil for model-year 2007 and newer heavy-duty and pickup truck diesel engines requiring API CJ-4 emission-quality oil standards. Delivers extraordinary lubrication in diesel engines in commercial, fleet and personal applications. Exceeds modern specs for emission-quality diesel oil.

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Series 3000 5W-30 Heavy Duty Diesel Oil
Fuel efficient formula for both gasoline and diesel fleets. Deliver up to 82 percent greater wear protection than other popular diesel oils. Series 3000 resists oil breakdown from heat, blow-by chemicals and oxygen up to ten times longer than conventional oils.
Product Code: HDD
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  15W-40 Heavy Duty Diesel and Marine Oil
AMSOIL Synthetic Heavy Duty Diesel & Marine Motor Oil is engineered for use in a wide variety of light and heavyduty applications, including over-the-road trucks, off road construction, marine engines, farm equipment, mining, industrial (pumps & generators) and personal automotive or commercial transportation. It is excellent for use with low or high sulfur diesel fuels in standard, turbocharged or supercharged engines, including modern low emission diesels such as those equipped with EGR systems.
Product Code: AME
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15W-40 Semi-Synthetic Diesel Oil
AMSOIL Semi-Synthetic 15W-40 Diesel Oil is a modern blend of high performance synthetic base stocks, natural base stocks, and advanced additives. It provides outstanding performance and protection over extended drain intervals in light and heavy-duty diesel engines.
Product Code: PCO
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  Synthetic 10W-30/SAE 30 Heavy Duty Diesel Oil
Where these viscosity grades are specified, AMSOIL Synthetic 10W-30/SAE 30 Diesel Oil (ACD) provides outstanding performance as a straight-grade SAE 30 for older two- and four-stroke diesels and as a multi-grade SAE 10W-30 in modern four-stroke diesels as well as gasoline engines. AMSOIL ACD is ideal for use in a wide variety of light and heavy-duty applications, including agriculture, off-road construction, trucking, mining, industrial (pumps and generators) and personal automotive or commercial transportation.
Product Code: ACD
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