AMSOIL Diesel Oil keeps you business running
 | AMSOIL Signature Series Max-Duty Synthetic Diesel Oil and Heavy-Duty Synthetic Diesel Oil exceed the latest API CK-4 specification and represent a serious upgrade in protection and performance compared to oils formulated for previous API diesel oil specifications, including API CJ-4 and CI-4+. More piston-scuffing protection for reduced wear Better thermal control to resist oil thickening, aid in cooling and reduce wear Improved shear stability for maximum resistance to oil consumption and wear Enhanced aeration control, promoting oil-pump efficiency, wear protection and heat resistance API CK-4 diesel oils are backward-compatible, meaning they are recommended in all applications specifying API CJ-4, CI-4+ (and prior) specifications. |
 | AMSOIL Signature Series Max-Duty Synthetic Diesel Oil Signature Series Max-Duty Synthetic Diesel Oil represents the top tier of AMSOIL protection and performance for diesel engines. 6X more engine protection* Reduced oil consumption Top-grade protection for extended drain intervals Available in 5W-30, 0W-40, 5W-40 and 15W-40 viscosities |
 | AMSOIL Heavy-Duty Synthetic Diesel Oil Heavy-Duty Synthetic Diesel Oil provides outstanding protection and performance for customers seeking an upgrade over conventional and other synthetic diesel oils. 4X more engine protection** Reduced oil consumption Outstanding protection for OEM-recommended drain intervals Available in 10W-30, 5W-40 and 15W-40 viscosities |
I would buy again and have continued to buy this oil. By Randy, from Williston ,Vermont on 3/27/ 2017 I have used this oil for over 18 years in a 7.3 diesel ford-350 4×4 and have had great performance in using it .The engine doesn’t have to work as hard with Amsoil synthetic oil 5-40w it runs cooler and less RPMs for the same speed as other oils . If you’re not using Amsoil synthetic oils in your engine and truck and or other motor vechicle your missing out on the best performance your motor Vechicles can give you
*Based on independent
testing in the Detroit Diesel DD13 Scuffing Test for specification DFS
93K222 using 5W-30 as worst-case representation.
**Based on
independent testing in the Detroit Diesel DD13 Scuffing Test for
specification DFS 93K222 using 10W-30 as worst-case representation.
