ZIC X3000 15W- 40 is a high quality, heavy-duty diesel engine oil that is engineered to provide good protection to engines for on and off-highway applications. ZIC X3000 is recommended for use in heavy-duty applications and operating environments found in trucking, construction and agricultural industries. ZIC X3000 is designed to address the needs of older vehicles where good value for performance remains a key driver for end users. Excellent wear protection. Excellent protection against corrosion, deposits and soot.