The most comprehensive motorcycle oil testing in history.
26 oils compared. 28 pages of documentation. Click Here (2.2MB PDF)
The second edition of the AMSOIL "Study of Motorcycle Oils" is now available for download. See how 32 of the top selling motorcycle oils compare in the most critical areas of motorcycle performance. This no-frills study was designed to help consumers make informed decisions when selecting motorcycle oils. There is no hype, no sales pitch, just facts. Never before has so much information on motorcycle oils been delivered in one easy-to-understand source.
See for yourself how the full range of the most popular motorcycle oils stand up to the hot-running, hard-pounding, high RPM conditions of motorcycle applications. This complete battery of tests includes wear protection, rust protection, oxidation stability and more.
The interactive test results below offer a glimpse inside the testing that is conducted with each oil in the second edition of the "Study of Motorcycle Oils". To see how other oils compared to the AMSOIL products, simply click on their names on the left side of each graph, and their color-coded results will display. We will feature different tests on the page from time to time. If you want to know how all of the oils did on every test, you can download the entire document above.
1. Higher temperatures produce greater volatility (evaporation).
2. Increased volatility causes increased oil consumption and emissions.
3. Oil is first heated to 250° C for a period of 60 minutes.
4. Air is drawn through the container holding the oil sample to remove vapor.
5. After 60 minutes, the remaining oil volume is weighed. 6. Comparison to initial oil weight. 7. A lower weight loss score indicates better performance.
Click on the oil brands below to see how they compare to AMSOIL 20W-50 (MCV)
Viscosity Shear Stability (ASTM D-6278)
1. Oil's initial viscosity is measured.
2. Oil is tested under shearing forces.
3. Measurements are taken at the end of 15, 30 and 90 cycles.
4. Comparison to initial oil viscosity.
5. A flatter line indicates a better shear stability.
Click on the oil brands below to see how they compare to AMSOIL 10W-40 (MCF)
Receive AMSOIL's Confidential Factory Direct Wholesale Price List in your email.
Enter your first name & email address and click on "eMail Price List" button!
AMSOIL Online Store
AMSOIL Preferred Customer Program. Save upto 25%!
Wholesale Business Accounts
Become an AMSOIL Dealer!
Request FREE AMSOIL Catalog
Questions? Please Contact us
Order AMSOIL By Phone
AMSOIL Online Store
Order AMSOIL By Fax
VISA and MASTERCARD is accepted for US and Canada.
Discover and American Express is accepted for US customers only
Order Your FREE AMSOIL Retail Product Catalog!
AMSOIL Retail Product Catalog is printed in vibrant colors, showcasing the AMSOIL product portfolio in a nice handy booklet. Order yours today &we'll mail it immediately!
Get AMSOIL Wholesale Price List via Email
Instantly receive the confidential AMSOIL wholesale price list via email! Review the extensive AMSOIL product line along with its wholesale & suggested retail pricing
Virtual Garage & Maintenance Software!
Bring all your vehicles & equipments under one virtual roof to schedule maintenance, record keeping & much more.
MyAMSOILGarage is free to use & available to anyone with an AMSOIL online account. Get started today by creating your free online account today!
Nationwide Shipping & Customer Service!
AMSOIL products are drop-shipped nationwide from the closest distribution center (USA & Canada)!
AMSOIL operates 13 strategically located distribution centers across US & Canada! (click icon for details)
Factory Direct Shipping!
All orders are processed & shipped factory direct.
AMSOIL Factory Direct Wholesale Accounts!
AMSOIL offers Factory Direct Wholesale Accounts for Business & Personal Use! Set up your account today & enjoy 25% off retail
Add to Cart & Checkout or Return to 1st Window to Continue
Login & Return to 1st Window to Continue Shopping
Create Account & Return to 1st Window to Continue Shopping
View Cart & Checkout or Return to 1st Window to Continue Shopping
Lookup Products & Return to 1st Window to Continue Shopping
Select your country.
Canada Ships from Canada. Prices in CA dollars.
United States Ships from USA. Prices in US dollars.