Delo 400 XLE SB Synthetic Blend SAE 15W-40 Heavy-Duty Diesel Motor Oil is designed to meet the high demands of diesel engines. It uses ISOSYN Advanced Technology, which combines expert formulation, unique high-performance additives, and premium base oils. This advanced blend helps enhance the durability of important diesel engine components. With Delo 400 oil, users can expect improved engine life, longer oil change intervals, and superior protection for diesel parts. This means vehicles operate more efficiently and have lower overall maintenance costs compared to older Chevron heavy-duty motor oil formulations. Ideal for those who rely on their diesel engines for work or travel, Delo 400 offers reliable performance and peace of mind.