I often hear comments that people never heard of AMSOIL. Well they have been around since 1972 and have been credited with starting the synthetic oil market. In comparison Mobil 1 hit the market in 1974.

Here is a nice brochure that gives a snapshot of their manufacturing plant operations in Superior, Wisconsin (Duluth, MN).

The AMSOIL Center

This brochure explains everything you need to know about motor oils.

Motor Oil & Filtration Guide

AMSOIL Color Catalog