SUPERIOR, Wis.--(BUSINESS WIRE)--AMSOIL has introduced a new Premium API CJ-4 Synthetic 15W-40 Diesel Oil. The new oil is an upgrade to the company’s most popular 15W-40 viscosity, now re-formulated ...

AMSOIL Inc. of Superior, Wis., has introduced its new Synthetic 5W-40 Premium Diesel Oil. This is a premium diesel oil for model year 2007 and newer heavy-duty and pickup truck diesel engines ...

Aerodynamic wheel covers can deliver small but meaningful fuel-economy gains for fleets, and Deflecktor says its latest design aims to make the technology easier and more affordable to deploy.

Amsoil has reformulated part of its diesel fuel additive line for targeted performance to achieve optimal results. Two of the products – Amsoil Diesel Injector Clean and Amsoil Diesel Injector ...