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Get Free Shipping, save Up to 25% and more perks as an AMSOIL Preferred Customer

Not only do you save up to 25 percent on AMSOIL products, you receive the following:

Exclusive product and freight promotions
Free shipping on orders over $100 U.S./$130 Canada
Points on purchases
Referral rewards

Become an AMSOIL Preferred Customer today.
Learn more about the AMSOIL Preferred Customer Program

Nationwide AMSOIL Dealer Serving the entire state of Missouri including the cities of Jefferson City, Kansas City, St. Louis, Springfield, Columbia, and Independence. AMSOIL DEALER - Holts Summit, Missouri

3 TIERS OF PREMIUM PERFORMANCE

Outstanding wear protection
Maximum cleanliness
Exceptional extreme-temperature protection

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Boosted cleaning power
Protects against wear

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Outperforms conventional motor oil
Protection to cover longer oil life monitor drain intervals

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AMSOIL synthetic diesel oils provide the ultimate protection for your hard-working diesel engine, preserving the horsepower you crave and keeping you on the road.

AMSOIL Dealer - Synthetic Oil Technology

AMSOIL DEALER - Direct Jobber serving the US and Canada.

We help introduce people to the full-line of AMSOIL products including motor oils, Transmission fluids, fuel additives, filters, gear lubricants, Grease, hydraulic oil, compressor oil and many other premium products exclusively sold by AMSOIL Inc.

AMSOIL DEALER - IOWA

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Preferred Customer Registration

Product Code: PREG6M-EA

Preferred Customers purchase AMSOIL products at wholesale cost, which is approximately 25 percent less than suggested retail. Six-month trial membership can only be purchased once; after the trial membership, Preferred Customers need to renew on an annual basis to maintain Preferred Customer status. Annual memberships can be renewed indefinitely.

Click here to learn about the membership.

AMSOIL Dealer - Castaic, CA

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Start Your Own AMSOIL Dealership

Product Code: DREG1E-EA

Click here to learn about the membership.

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Shop By Equipment

Choose the type of vehicle or equipment you have and you’ll be shown all the applicable AMSOIL products. No matter what you drive, ride or operate, AMSOIL formulates high-quality synthetic lubricants that help you get the most out of your vehicles.

These pages also includes a handy FAQ section, information on AMSOIL Official Oil partnerships, cost-savings charts and other useful information.

Choose your vehicle or equipment and start shopping.

AMSOIL Dealer - Reno NV

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Shop By AMSOIL Product

Already know which AMSOIL products you need? Shop by product pages make finding what you’re looking for simple. Choose a category – motor oil, transmission fluid, fuel additives and more – and start shopping. With a complete product line that covers cars, trucks, motorcycles, ATVs and practically anything else with an engine, you’re sure to find what you’re looking for.

Product pages also include product data bulletins, links to performance tests, video tips and other valuable information.

Choose your products and start shopping.

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MyAMSOILGarage™

MyAMSOILGarage is a free maintenance-tracking program that stores AMSOIL product information for all your vehicles and equipment. It provides quick product recommendations and one-click purchasing.

Free and easy to use
Stores maintenance info for all your vehicles
Delivers product recommendations
Tracks oil and filter changes
Email maintenance reminders

FAQS

Can synthetic oil be used in new engines?

Answer: Yes. Synthetic oil is perfectly safe for use in both new and high-mileage engines.

Must new cars be broken in using petroleum oil?

Answer: No. AMSOIL synthetic motor oils can be safely used during break-in. In fact, many vehicles, including the Dodge Viper and Chevrolet Corvette, are factory-filled with synthetic oil.

Why is there an hours limit in addition to time and mileage limits on AMSOIL synthetic motor oil’s service life?

Answer: No matter how well motor oil is formulated, it won’t last forever. As the miles accumulate, motor oil begins to degrade and lose its lubricating effectiveness, while the additives are depleted. Severe-service driving conditions accelerate this process. Even with little mileage on the oil, oxidation, gases and moisture take their toll and start the degradation process, making it necessary to set both a mileage and time limit with oil change intervals. Excessive idling, common with fleet vehicles, puts additional stress on the oil, making it necessary to set an hours limit for vehicles subjected to excessive idling. Motor oil and vehicle manufacturers have developed general recommendations for the maximum amount of time or miles that the oil can be used; typically these intervals fall between 3,000 and 7,500 miles, depending on the type of service.

Many AMSOIL synthetic motor oils are specially formulated for extended drain intervals, providing maximum protection longer than other oils. Check the product data sheet for specific recommendations.

Will synthetic motor oils cause engines to leak oil?

Answer: No. Synthetic oils do not cause engines to leak oil. In fact, AMSOIL synthetic motor oil is fully compatible with modern seal materials and is properly formulated to condition seals, keeping them pliable to prevent leakage.

Can AMSOIL motor oils be mixed with other brands?

Answer: Yes. AMSOIL synthetic motor oils are compatible with other conventional and synthetic motor oils. Mixing other oils with AMSOIL motor oils, however, will shorten the oil’s life expectancy and reduce its performance benefits. AMSOIL does not support extended drain intervals where oils have been mixed. Mixing other oils with AMSOIL motor oils will also void the AMSOIL limited warranty.

Why are AMSOIL synthetic motor oils capable of extended drain intervals?

Answer: AMSOIL synthetic motor oils are formulated using premium synthetic base oils, and the highest-quality additives, that provide extended-drain capabilities. AMSOIL synthetic motor oils achieve greater cleaning powers, while providing better equipment protection over longer oil drain intervals. The unique synthetic formulation and robust TBN retention of AMSOIL synthetic motor oils work to resist oxidation and neutralize the acids that shorten the service lives of other oils. Their characteristic resistance to high-temperature volatility (burn-off) helps reduce oil consumption, while maintaining viscosity over longer periods of time than other oils. Check the product data sheet for specific recommendations.

Will AMSOIL motor oils decrease oil consumption?

Answer: AMSOIL synthetic motor oils can reduce oil consumption in mechanically sound engines. However, AMSOIL synthetic motor oils cannot fix engines that consume oil due to mechanical problems.

Is there a recommended procedure for changing to AMSOIL synthetic motor oil?

Answer: There are no special requirements for changing to AMSOIL synthetic motor oil. However, in older vehicles with high mileage, it may be advisable to use AMSOIL Engine and Transmission Flush first. This will ensure the engine is clean and free of accumulated contaminants that may affect the service life of AMSOIL synthetic motor oil. Installation of an AMSOIL Ea Oil Filter at every oil change is also recommended.

How do AMSOIL synthetic motor oils compare to other motor oils?

Answer: The importance of using good-quality oil in an engine cannot be overstated. AMSOIL synthetic motor oils consistently outperform conventional and other synthetic oils in virtually every category of performance, including wear protection, extreme high- and low-temperature performance, foam control, viscosity retention, rust and corrosion protection, volatility and fuel economy. While other brands may provide good performance in some of these areas, AMSOIL synthetic motor oils consistently perform at the top in every category. Drivers can have confidence knowing that AMSOIL synthetic motor oils provide maximum performance and protection.

What are "normal" and "severe" driving conditions?

Answer: Each vehicle manufacturer defines "normal" and "severe" driving conditions for its equipment; AMSOIL recommends owners check these definitions in their owner's manual to determine the service condition in which they typically drive.

AMSOIL defines normal service as personal vehicles frequently traveling greater than 10 miles (16 km) at a time and not operating under severe service.

AMSOIL defines severe service for gasoline engines as conditions that include commercial or fleet vehicles; excessive idling; or frequent towing, hauling, plowing or driving in dusty conditions.

AMSOIL defines severe service for diesel engines as extensive engine idling, daily short-trip driving less than 10 miles (16km) or frequent dusty-condition driving.

AMSOIL Dealer - East Freetown, MA

AMSOIL Dealer - Centralia, MO

AMSOIL Dealer - California, MO

AMSOIL Performance Tests

Signature Series Max-Duty Diesel Oil Proven Best at Protecting Engines from Rust

Why should you buy AMSOIL Signature Series Max-Duty Synthetic Diesel Oil?

Diesel All-In-One Performance Test

AMSOIL Diesel All-In-One provides superior protection against cold-temperature gelling.

SABER® Professional Synthetic 2-Stroke Oil Performance Test

In testing, equipment using SABER Professional was virtually carbon-free.

DOMINATOR® Competition Diesel Oil Performance Test

Results from the EHD Film Thickness Test show DOMINATOR® provides excellent film thickness.

Heavy-Duty Diesel Oil Performance Tests

AMSOIL Heavy-Duty Synthetic Diesel Oil provides excellent wear protection and reduces oil consumption.

Signature Series Diesel Oil Performance Tests

Signature Series Max-Duty Synthetic Diesel Oil delivers more wear protection, keeps turbos clean and protects against rust.

OE Performance Test

OE Synthetic Motor Oil far surpasses the industry-standard in wear protection.

XL Performance Test

Results from the GM Oxidation and Deposit (GMOD) Test show XL Synthetic Motor Oil resists oil breakdown.

Signature Series Synthetic Motor Oil Outperforms the Competition

Results from the latest round of testing prove Signature Series leads the pack in engine protection.

Redmax 100:1 Trimmer Technical Study (G3522)

AMSOIL SABER® Professional Synthetic 2-Stroke Oil mixed at 100:1 resisted deposits better than RedMax* 2-Stroke Engine Oil mixed at 50:1.

ECHO 100:1 String Trimmer Technical Study (G3470)

AMSOIL SABER® Professional Synthetic 2-Stroke Oil mixed at 100:1 resisted deposits and maintained power better than ECHO Power Blend XTended Life Universal 2-Stroke Oil mixed at 50:1.

A Study of LUCAS Semi-Synthetic 2-Cycle Oil in ECHO* String Trimmers (G3466)

AMSOIL SABER® Professional Synthetic 2-Stroke Oil mixed at 50:1 provided improved resistance to performance-robbing deposits and power loss compared to LUCAS Semi-Synthetic 2-Cycle Oil in ECHO string trimmers.

ECHO String Trimmer Technical Study (G3455)

AMSOIL SABER® Professional Synthetic 2-Stroke Oil resisted performance-robbing deposits and maintained power and performance in ECHO string trimmers.

3,469-Mile Case Study in Rotax E-TEC Engine (G3038) (1.1 MB PDF)

AMSOIL submitted the pistons from a Ski-Doo Rotax E-TEC 800R engine to an ASTM-calibrated rater following 3,469 miles of aggressive trail riding to reveal that AMSOIL INTERCEPTOR® Synthetic 2-Stroke Oil provided outstanding protection and prevented piston skirt scuffing and ring sticking.

AMSOIL P.i. - A Study in Performance (G2543) (1 MB PDF)

8-page 4-color brochure detailing performance testing of AMSOIL P.i.

AMSOIL Testimonial: Duluth Lawn Care

AMSOIL Dealer - Columbus
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The New SEVERE GEAR Easy-Pack

Enthusiasts pride themselves on finding their own solutions to tough problems. When there’s no manual, they roll up their sleeves and make it work. But even the most inventive gearhead inevitably throws down an oily rag and wonders why the process has to be so difficult. Changing gear lube is often one of those frustrating tasks.

Differentials Require Service

A clean, high-quality gear lube helps prevent the howls and whines that can occur from extended periods of metal-to-metal contact. It provides differentials and transmissions with crucial protection – particularly against the rigors of towing and hauling – and it should be changed on a schedule to protect your pickup. Unfortunately, changing this vital fluid doesn’t come without challenges.

Tight Squeeze
Removing the cover on your “pumpkin” and draining the fluid might not be difficult, but installing new fluid requires the ability to push liquid uphill. Unless the pickup is lifted, differentials are packed in high and tight. Reaching fill holes is difficult, and you cannot tip the bottles at an angle that allows the fluid to run into the differential with the help of gravity.

Troublesome Current Solutions
That’s why most gear lube is sold in conical plastic bottles. The idea is that you’ll be able to squeeze the gear lube from the bottle and force it into your diff. Unfortunately, those bottles are rigid and hard to squeeze. You cannot get all of the fluid out of the bottle, so you end up buying more than you truly need to get the job done. Pumps are an improvement, but even those can be leaky or require a third hand to operate without major spillage.

The Mess
No matter your method (pump or conical bottle), it seems impossible to service differentials without making a big mess.

The AMSOIL Solution
The new AMSOIL easy-pack eliminates all of the old obstacles.

Easily access hard-to-reach fill holes. The packaging is flexible. Just bend it until the nozzle is pointing where you need it to be and insert it into the fill hole.

Easily squeeze out entire contents. Empty the easy-pack into your differential with no waste and no mess.

AMSOIL Severe Gear 75W-90 and 75W-140 100% Synthetic Gear Lube (SVG, SVO) continue to provide the same great performance.