Motor Oil Info

The One-Arm Bandit is not an accepted test by the ASTM and is too variable to differentiate between samples. Instead, the Standard Test Method for Wear Preventive Characteristics of Lubricating Fluid (Four-Ball Method), designation ASTM D-4172, is recognized by the ASTM and is used to evaluate the anti-wear performance of lubricants.

AMSOIL Synthetic Motor Oils firmly recommends against using any aftermarket additives unless they are recommended by AMSOIL for AMSOIL products. Don’t be misled by non-ASTM certified testing demonstrations to sell oil additives that focus exclusively on extreme pressure performance in crankcase environments.