LUBRIGUARD Heavy Duty Synthetic Blend SAE 10W30 FA-4 Engine Oil is designed to provide enhanced protection against oil oxidation, viscosity loss due to shear, and oil aeration, as well as protection against catalyst poisoning, particulate filter blocking, engine wear, piston deposits, degradation of low- and high-temperature
properties, and soot-related viscosity increase. Lubriguard Synthetic Blend SAE 10W-30 FA-4 Heavy Duty Diesel Engine Oil meets
API Service Classification FA-4, Cummins CES 20087, and Detroit™ DFS 93K223.