Chevron Delo 400 XLE SB is a synthetic blend SAE 15W-40 heavy-duty diesel engine oil sold in a convenient 3-pack of 1-gallon (3.785 L) bottles. Formulated with ISOSYN Advanced Technology, it delivers longer oil life, better wear protection, and extended engine durability compared to conventional oils. It meets API CK-4/SN service categories, making it suitable for all diesel engines including naturally aspirated and turbocharged four-stroke diesel engines as well as four-stroke gasoline engines.

This oil provides up to 50% better wear protection versus API CJ-4 rated oils and is ISOCLEAN Certified, ensuring the lubricant meets OEM cleanliness requirements to help minimize downtime, reduce maintenance costs, and extend equipment life. It is fully backwards compatible with engines requiring API CJ-4, CI-4, CI-4 Plus, and CH-4 service categories. Delo 400 is recommended for mixed fleet applications and is designed to maximize engine, oil filter, and DPF performance while keeping emissions systems operating efficiently.