RS Warrior Forum banner

1 - 3 of 3 Posts

505 Posts
Discussion Starter #1 (Edited)
To me this remains one of the most definitive studies on motorcycle oils. Although published in 2009 it still remains pretty relevant today.
Answers many questions about various motorcycle oils and how they perform.
The purpose of this paper is to provide information regarding motorcycle applications, their lubrication needs and typical lubricants available to the end user. It is intended to assist the end user in making an educated decision as to the lubricant most suitable for his or her motorcycle application.
I checked to see if it had been posted on our forums before but couldn't find it anywhere so here goes.

Editor’s Note: At the time of its original printing in December 2005, the A Study of Motorcycle Oils white paper represented the most comprehensive study of motorcycle oils ever published. The document served to educate hundreds of thousands of readers on the complex dynamic of motorcycle oil and motorcycle operation. The paper revealed, through an exhaustive series of relevant industry tests, that the motorcycle oils available to consumers varied greatly in quality and in their ability to perform the functions of motorcycle lubrication.
This second edition printing maintains the same scientific approach and includes the same testing protocol. Additional oils were tested, and some of the original oils tested differently than they had initially, indicating formulation changes. It should be noted that the products appearing in this study were those formulations available in the marketplace at the time the testing was performed. AMSOIL recognizes that manufacturers change formulas from time to time, and some of the products in this report may have since been reformulated.

The testing used to evaluate the lubricants was done in accordance with American Society for Testing and Materials (ASTM) procedures. Testing was finalized in May 2009. Test methodology has been indicated for all data points, allowing for dupli- cation and verification by any analytical laboratory capable of conducting the ASTM tests. A notarized affidavit certifying compliance with ASTM methodology and the accuracy of the test results is included in the appendix of this document. Five different laboratories were used in the generation of data listed within this document. In all cases blind samples were sub- mitted to reduce the potential of bias.
This document reviews the physical properties and performance of a number of generally available motorcycle oils. Those areas of review are:
1. An oil’s ability to meet the required viscosity grade of an application.
2. An oil’s ability to maintain a constant viscosity when exposed to changes in temperature. 3. An oil’s ability to retain its viscosity during use.
4. An oil’s ability to resist shearing forces and maintain its viscosity at elevated temperatures. 5. An oil’s zinc content.
6. An oil’s ability to minimize general wear.
7. An oil’s ability to minimize gear wear.
8. An oil’s ability to minimize deterioration when exposed to elevated temperatures.
9. An oil’s ability to resist volatilization when exposed to elevated temperatures.
10. An oil’s ability to maintain engine cleanliness and control acid corrosion. 11. An oil’s ability to resist foaming.
12. An oil’s ability to control rust corrosion.
Individual results have been listed for each category. The results were then combined to provide an overall picture of the ability of each oil to address the many demands required of motorcycle oils.

1 - 3 of 3 Posts