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Even after doubling the length of the industry-standard test
SEVERE GEAR is designed for those who demand the best
required by the ILSAC GF-6 and API SP specifications
Wide range of compatibility
AMSOIL Signature Series 5W-40 100% Synthetic Max-Duty Diesel Oil polo 9n See the Product Data BulletinAMSOIL Signature Series 5W 40 100% Synthetic Max Duty Diesel Oil Developed to protect the horsepower diesel enthusiasts crave and extend the life of hard working commercial equipment in the most severe conditions. Signature Series synthetic technology delivers max duty protection in on and off road applications. See the Product Data Bulletin for full details. AMSOIL Diesel Oil Comparison Chart MAXIMUM ENGINE PROTECTION Delivers 6X more wear