AMSOIL Gasoline Engine Oils

AMSOIL's synthetic motor oils are totally unique. If you are looking for increased performance, dependability and efficiency, AMSOIL is the answer. Click here for the Application Guide to look up the information on your Vehicle.

Series 2000 0W-30 Motor Oil Race-proven technology designed for passenger car performance. Provides unsurpassed fuel efficiency and up to twice the wear protection provided by popular conventional and synthetic motor oils. Recommended for use in all vehicles requiring 5W-30 or 10W-30 motor oils. Oil may be drained at intervals up to 35,000 miles, or one year, which ever comes first. Product Code: SSO     Pricing Information   More Product Information
Dominator® Synthetic 15W-50 Racing Oil (RD50) The number one choice for racers of all types of vehicles. Special synthetic base stock blend and advanced additive package provides up to four times the wear protection of other motor oils. Reduces friction for quicker engine response and increased horsepower. Product Code: RD50      Pricing Information More Product Information
Synthetic 0W-20 Motor Oil Synthetic 0W-20 Motor Oil. Several vehicle manufacturers, including Ford, Honda, DaimlerChrylser and Toyota, recommend either a 0W-20 or 5W-20 motor oil in many of the vehicles they produce, increasing demand for these oils.  The new AMSOIL 100% Synthetic 0W-20 Motor Oil provides maximum protection in a light viscosity for up to 25,000 miles or one year, whichever comes first Product Code: ASM     Pricing Information More Product Information
SAE 5W-30 Motor Oil AMSOIL 100% 5W-30 Motor Oil 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     Pricing Information More Product Information
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  Pricing Information More Product Information
SAE 5W-40 European Engine Oil AMSOIL Synthetic 5W-40 European Engine Oil is specially formulated for the lubrication needs of European gasoline and diesel cars and light trucks. Formulated with advanced AMSOIL polyalphaolefin (PAO) synthetic base stocks, premium additives and a broad 5W-40 viscosity rating. AMSOIL 5W-40 allows motorists to take advantage of the maximum extended drain intervals recommended by European automakers while providing second-to-none protection and performance in the most demanding operating conditions. Product Code: AFL    Pricing Information More Product Information
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     Pricing Information More Product Information
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      Pricing Information More Product Information
XL-7500 Motor Oil 5W-20 Motor Oil AMSOIL Synthetic XL-7500 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    Pricing Information More Product Information
XL-7500 Motor Oil 5W-30 Motor Oil AMSOIL Synthetic XL-7500 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  Pricing Information More Product Information
XL-7500 Motor Oil 10W-30 Motor Oil AMSOIL Synthetic XL-7500 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     Pricing Information More Product Information
XL-7500 Motor Oil 10W-40 Motor Oil AMSOIL Synthetic XL-7500 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      Pricing Information More Product Information
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     Pricing Information More Product Information
20W-40 Natural Gas Engine Oil AMSOIL Synthetic Natural Gas Engine Oil is chemically formulated to deliver unsurpassed protection for natural gas engines. Product Code: ANG More Product Information

                   Which 30 Weight Oil should you use.

AMSOIL 0W-30, 5W-30 and 10W-30 synthetic motor oils are ALL 30 weight oils. The answer is that ANY one can be used regardless if your vehicle owners’ manual says to use, for example, a 5W-30. "W" means winter. In winter weather the 0W oil will flow like a 0W oil, and the 5W will flow like a 5W oil and a 10W will flow like a 10W oil just until the engine warms up. In order to understand the differences one has to first understand that the numerical values given to these various weight oils are strictly empirical numbers. For example, 0W does not mean that the oil has no weight. That is one of the reasons why we say it is strictly an empirical number.

In order to determine the differences between the three oils one has to look at the kinematic viscosity of each lubricant. The kinematic viscosity is essentially the amount of time, in centistokes, that it takes for a specified volume of the lubricant to flow through a fixed diameter orifice at a given temperature.

            Let's compare the kinematic viscosity of the three AMSOIL lubricants:

As you can see from the data above the kinematic viscosities are extremely close. Therefore, whether you use the 0W-30, 5W-30 or the 10W-30 is strictly a matter of choice. With the small differences in kinematic viscosity you would be hard-pressed to detect these differences on initial engine start-up without specialized engine test equipment.

All three oils are excellent motor oils and any can be used in a vehicle, which requires a 0W-30, 5W-30 or 10W-30 oil as well as in several other engine applications including an engine that recommends 5W-20 oil.

AMSOIL Series 2000 0W-30 Severe Service motor oil is one of the best synthetic lubricants AMSOIL manufacturers for gasoline engine passenger vehicles and light trucks. The molecular and chemical technology used to develop this oil was derived from AMSOIL's Racing Oil. It is a 35,000 mile/1-year motor oil. This is the same oil used by numerous police vehicles and severe duty fleets nationwide. In fact, many national racing teams use the 0W-30 for the qualifying event, then they change to the AMSOIL 20W-50 Racing Oil for the race. The extra horsepower and friction reduction from the 0W-30 often assists a race driver in attaining a better starting position. In fact, we know exactly which race teams use it, but cannot disclose that information.

This leads to the next topic: many people also ask us if the 0W-30 is too thin a viscosity oil for high ambient temperature operation. The answer is absolutely not! Thicker viscosity oils are not always necessarily better since in addition to its' various engine lubrication functions; an oil must also effectively transfer heat. Only about 60% of an engine cooling is performed by the engine coolant, and only on the upper half of the engine. Mainly the engine oil performs the remaining 40% of an engines cooling.

Although a vehicle that is recommended to use 30-weight oil can also use 40-weight oil, it is usually not needed. You will gain absolutely no benefit from using thicker viscosity oil if it is not needed. The only time we recommend a 40 weight oil, such as AMSOIL's 10W-40, to a customer in a passenger car or light truck application is if the vehicle's engine is excessively worn and consumes oil at a higher than normal rate or if the vehicle is being used for very severe duty, high load, high temperature applications.

Since 1972, AMSOIL Synthetics have proven to be the BEST. AMSOIL also engineers and manufactures Super Duty Oil filters which have a 12,500 mile service life as well as specialized filtration systems for commercial and fleet applications in cars and light, medium and heavy trucks which can filter particles down to less than one micron ( a standard full flow oil filter can only filter to 20-25 microns, and at a reduced efficiency) making oil changes virtually unnecessary and virtually eliminating engine wear. These filters have been proven by millions of miles of over-the road trucks, construction equipment and fleet service.

AMSOIL saves you time and money.
The only 25,000 mile/one- year and 35,000/one- year motor oil in the world.
Exceeds the most stringent performance specification of all major U.S. and foreign automotive and truck manufacturers.
Provides up to two-times the wear protection of other motor oils.
Increases the life of your vehicle.
Improves performance, fuel economy and efficiency.
Diesel oil and filtration products designed to deliver 1,000,000 miles for over-the-road trucks before engine overhaul.
Used by many national racing teams, fleets, police departments, construction firms and trucking companies.

A common misconception is that AMSOIL is expensive because we do not list prices. We don't list prices because it is against AMSOIL's policy to list them publicly. Retail prices are available by clicking the More Product Information at the bottom of each product.  Wholesale prices (about 20% less) is available to Preferred Customers  For a free catalog  click this link!