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Max-Duty Synthetic Diesel Oil 5W-40

Outstanding extreme-pressure protection

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 more wear protection,* delivering the extra protection your diesel deserves. 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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Wear on rings and cylinder liners leads to increased oil consumption and loss of compression, resulting in reduced horsepower and fuel economy. Independent testing shows Signature Series Max-Duty delivers 6X more wear protection than required by the Detroit Diesel DD13 Scuffing Test for Specification DFS 93K222, delivering extra protection so you can push your diesel with peace of mind.

Using top-tier synthetic base oils, Signature Series Max-Duty is naturally resistant to oxidation and the thickening effects of soot contamination. That, along with boosted detergent/dispersant additives, keeps soot particles suspended independently, helping prevent the formation of larger, wear-causing particles. Viscosity increase is minimized and soot-related wear is controlled. Lower volatility also helps Signature Series Max-Duty Diesel Oil retain its viscosity after high-temperature service for maximum engine protection and efficiency.

Signature Series Max-Duty Synthetic Diesel Oil resists thermal (heat) breakdown better than conventional and competing synthetic diesel oils. Unlike conventional oils, Signature Series contains no wax, staying fluid in sub-zero temperatures for easier starting, improved oil flow and reduced wear. Signature Series 0W-40 (DZF) has a broad viscosity range that offers 4X better cold-cranking ability than a 15W-40 oil in the ASTM D5293 cold-cranking viscosity test, making it excellent for use in both hot-operating engines and cold-weather starting extremes.

Signature Series Max-Duty has a low rate of volatility (burn-off), reducing oil consumption during operation and passing less oil vapor into the combustion chamber. It provides up to 76 percent less oil consumption than required by the API CK-4 standard in the Caterpillar-1N oil consumption test.

AMSOIL Signature Series Max-Duty Synthetic Diesel Oil provides protection boosted to the max, delivering up to 60% better turbo cleanlinessJ and withstanding the extra demands you place on the turbo when pulling heavy loads or updating the tune for maximum horsepower. JBased on specification standards of CAT C13 2nd Ring Top Land Carbon testing. K Based on industry standard testing using the NMMA FC-W Rust Test.

Based on specification standards of CAT C13 2nd Ring Top Land Carbon testing

Max-Duty Synthetic Diesel Oil for Reliable Heavy-Duty Performance

Keeping a diesel engine in excellent condition starts with choosing a lubricant built for demanding workloads. This oil is developed to provide dependable protection against wear, heat, and harmful deposits that can affect engine performance over time. Its advanced synthetic formulation supports clean engine operation while delivering consistent lubrication during cold starts and high-temperature conditions. Customers who want AMSOIL 5W-40 diesel oil in Pasadena, TX, can find a premium solution designed for hardworking diesel pickups, commercial vehicles, and heavy-duty equipment.

Dependable Protection with AMSOIL 5W-40 Synthetic Oil

Heavy-duty diesel engines operate under significant stress every day, making premium lubrication an important part of routine maintenance. AMSOIL 5W-40 synthetic oil maintains viscosity, resists oxidation, and provides strong film strength to protect critical engine components. Its advanced formula also helps minimize sludge and deposits that may reduce engine efficiency over time. This synthetic diesel oil supports dependable performance in demanding driving conditions while helping extend the life of valuable engine components.

Built for Diesel Engines That Work Hard

Drivers and fleet operators expect lubricants that perform consistently throughout recommended service intervals. For dependable engine protection, AMSOIL 5W-40 diesel oil in Pasadena, TX, offers a premium synthetic formula designed to handle challenging operating environments while helping reduce engine wear. The synthetic formula supports reliable lubrication under heavy loads and changing temperatures, helping diesel engines maintain smooth operation.

Get the Right AMSOIL Diesel Oil Today

These AMSOIL products are genuine and trusted by professionals who value premium quality and long-lasting engine protection. You can also find the AMSOIL 0W-40 Signature Series, which is a premium synthetic lubricant designed for outstanding engine protection and dependable performance. Order genuine AMSOIL products today!

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