• Superior Performance
• Reduced Operating Costs
• Greater Engine Durability
• Extended Drain Capability

Amsoil Synthetic Diesel Oils lubricate and protect diesel engines better than conventional lubricants do. AMSOIL Synthetic Diesel Oils' volatility is impressively low which keeps oil consumption rates low and inhibits oil thickening. For example, AMSOIL Synthetic 15w-40 Heavy Duty Diesel and Marine Oil loses only 6 percent of its mass to volatility in the NOACK Volatility Test (DIN-51581). Other popular 15w-40 oils lose as much as 13.96 percent.

AMSOIL Synthetic Diesel Oils provide thermal stability to keep oil oxidation rates low, inhibits sludge formation and ensures proper engine lubrication and protection. AMSOIL Synthetic Diesel Oils also provide outstanding oxidation resistance and are formulated with 12 TBN (Total Base Number), a high value designed to provide superior control of corrosion and high temperature deposits. These are critical factors in safely extending oil drain intervals. AMSOIL Synthetic Diesel Oils bear the Mack EO-M, Volvo VDS and VDS2 labels, showing they meet Volvo's demanding extended drain performance specifications. Oil drains may be extended almost indefinitely by using AMSOIL'S Dual Remote or Dual-Gard By-Pass Oil Filtration System and used oil analysis.

AMSOIL Series 3000 5w-30 Heavy Duty Synthetic Diesel Oil is formulated for outstanding wear protection and ultra-cold temperature protection. Because of its cold temperature formulation, cold temperature starts are easier on engines--making AMSOIL Series 3000 ideal for northern tier diesel owners. In a head-to-head comparison, AMSOIL Series 3000 provided better wear protection than Delvac1, Delo 400, Rotella T, and Cummins Premium Blue (see chart). Independent laboratory testing shows up to 43 percent less wear with Series 3000 than with the other oils tested. 

As you can see, AMSOIL Synthetic Diesel Oils provide light duty and heavy duty diesel engines the Maximum in Engine Protection while allowing extended oil drains. For more information on AMSOIL By-Pass Filters, Your Vehicle Oil Filter Application or any other questions you may have, click on the following links.