Updated Report from ASMOIL INC. of Superior, WI Compares 32 Leading Motorcycle Oils

Superior, WI, – July 28, 2009 – (Motor Sports Newswire) – AMSOIL INC. of Superior, WI has released an updated motorcycle oil white paper report. “A Study of Motorcycle Oils, Second Edition” is a 28 page document comparing the test results of 32 leading 10W-40 and 20W-50 motorcycle oils. Each oil was subjected to 12 tests conducted in accordance with American Society for Testing and Materials (ASTM) amsoil_logo250pxprocedures. The document also includes a concise informative introduction detailing the differences between motorcycle and automotive engine applications.

Comparison points addressed physical properties, performance and pricing. At the conclusion of all testing, each oil was assigned a score for each test result. Because a quality motorcycle oil must perform well in many different areas, results in all categories were added together to produce an overall total for each oil.

A free copy of the report is available by calling 1-800-777-8491. Ask for the motorcycle oil white paper, “A Study of Motorcycle Oils.” The document can also be downloaded as a PDF from http://www.amsoil.com/products/streetbikes/WhitePaper.aspx. Or write to AMSOIL INC., AMSOIL Building, Superior, WI 54880.

SAE Viscosity Grade (Initial Viscosity – SAE J300); Viscosity Index (ASTM D-2270); Viscosity Shear Stability (ASTM D-6278); High Temperature/High Shear Viscosity (HT/HS ASTM D-5481); Zinc Concentration (ppm, ICP); Wear Protection (4-Ball, ASTM D-4172); Gear Performance (FZG ASTM D-5182); Oxidation Stability (TFOUT ASTM D-4742); Volatility (Evaporation) (ASTM D-5800); Acid Neutralization and Engine Cleanliness (TBN ASTM D-2896); Foaming Tendency (ASTM D-892)

Rust Protection (Humidity Cabinet ASTM D-1748); and Wet-Clutch Compatibility (JASO T 904:2006, limited review)

AMSOIL has been the recognized leader in synthetic lubrication since 1972. For more information about AMSOIL synthetic lubricants and performance products contact your nearest AMSOIL distributor, visit www.amsoil.com or call AMSOIL at (715) 392-7101 or 1-800-777-8491. AMSOIL INC., AMSOIL Building, Superior, WI 54880.