Tuesday, March 1, 2022

Series 3000 5W-30 Synthetic Heavy Duty Diesel Oil Discontinued

AMSOIL Series 3000 5W-30 Synthetic Heavy Duty Diesel Oil is discontinued and available while supplies last due to diminishing sales. Customers using this product are encouraged to upgrade to Signature Series Max-Duty 5W-30 Synthetic Diesel Oil.


While our previous-generation synthetic diesel oils set the bar for quality and protection for over 20 years, Signature Series Max-Duty Synthetic Diesel Oil exceeds the latest API CK-4 specification and represents 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.

*than required by the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 5W-30 as worst-case representation.

All trademarked images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use.