Chevron Delo® 400 SAE 50 Monograde Diesel Engine Oil is a premium heavy-duty monograde oil formulated for two-cycle and older four-cycle diesel engines that require straight-grade lubricants. Built with ISOSYN® Technology and advanced additive chemistry, it provides proven wear protection, oxidation stability, and deposit control under severe-duty conditions.

This dependable monograde oil delivers:

• Excellent wear protection for pistons, bearings, and rings under high loads

• Outstanding detergency and dispersancy, keeping engines cleaner and running longer

• Strong oxidation resistance, helping extend oil life and minimize sludge buildup

• Stable viscosity control, ensuring consistent lubrication in high-temperature operations

• Compatibility with legacy equipment, making it ideal for fleets running two-cycle diesels or older engines

Packaged in a 5-gallon pail, this option is perfect for fleet operators, marine users, service shops, and equipment owners needing manageable supply with professional-grade protection. Chevron Delo 400 SAE 50 Monograde Diesel Engine Oil ensures long-lasting durability, reliable performance, and cost-effective operation where multigrade oils are not recommended.