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Signature Series Max-Duty
Synthetic Diesel Oil
Maximum-duty protection for your hardest working
Protect your investment in diesel power and confidently
extend drain intervals with our top-grade synthetic diesel
oil. AMSOIL Signature Series Max-Duty Synthetic Diesel
Oil delivers 6X better wear protection than required by the
Detroit Diesel DD13 Scuffing Test for Specification DFS
93K222. Advanced synthetic technology provides excellent
viscosity control and outstanding extreme-temperature
performance, while minimizing oil consumption. The result:
protection that’s boosted to the max.
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Stores Maintenance info for all your vehicles
Delivers product recommendations
Tracks oil & filter changes