Nemco Heavy Duty Engine Oils (HDEO) are premium performance lubricants designed for use in heavy duty diesel engines. These products meet and exceed the current API CK-4 and CJ-4 oil specifications and were engineered to protect 2017 model year exhaust emission standards. They are backward serviceable for use in pre-2017 diesel engines.
Nemco HDEO products are recommended for on-highway and off-highway heavy duty service, in fleet, construction and agriculture equipment.
The HDEO product line includes common oil viscosity grades such as 15W-40 and 10W-30 as well as standard mono-grades from 10W to 50, and a variety of synthetic multi-viscosity blends such as 0W-40 and 5W-40 for severe temperature service.