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Isosyn Technology ISOSYN® Technology Advantages Chevron's proprietary ISOSYN technology combines highly refined base oils with advanced additives to create products that rival synthetic lubricants in critical performance tests. Learn more about the many benefits of ISOSYN Technology here.

Delo® Engine Oils

Delo 400

Delo with Isosyn® Technology. Lets You Go Further.

Properly lubricating the inside of a heavy-duty engine requires more than just creating a protective film. Quality heavy-duty engine oils must also disperse soot and control sludge in order to help guard against loss of your engine's life.

With fuel costs a constant concern, maximizing fuel efficiency is an important component of improving operational efficiency. Delo products have long assisted in reducing operating costs and improved fuel efficiency is one way we help. Switch to one of Delo’s fuel economy products, and you could see up to 4% fuel economy improvement compared to SAE 15W-40 oils. Actual results will vary depending upon vehicle type, load and other driving conditions.

Fuel Economy Motor Oils:

Notable Delo Motor Oils:

Fuel Economy Motor Oils:

Delo 400 LE Synthetic SAE 5W-30

Delo 400 LE Synthetic SAE 5W-30 formulated with ISOSYN® Technology is our best fuel economy performance motor oil. A top-tier synthetic heavy duty motor oil formulated for reliable performance AND has shown in SAE J1321 Fuel Consumption Tests up to 4.5% improved fuel economy improvement with short haul trucks (Class 6) and 2% with long haul trucks (Class 8) when compared to SAE 15W-40. Promotes consistent cold engine starting. With ISOSYN technology, there’s no compromise on durability.

Delo 400 LE Synthetic SAE 5W-40

Delo 400 LE Synthetic SAE 5W-40 has been specifically designed to meet the demands of newer, low emission engines equipped with advanced emission control technologies, while at the same time providing the highest level of performance in pre-2007 engines. This product utilizes viscosity index improvers to promote stable viscosities and soot dispersion between oil drains, contributing to maximum vehicle utilization and minimal downtime. With its low viscosity, Delo 400 LE Synthetic Engine Oil promotes consistent cold engine starting.

Delo 400 XLE Synblend SAE 10W-30

Delo 400 XLE Synblend SAE 10W-30 is our latest generation premium quality motor oil formulated with ISOSYN® Technology, Chevron’s exclusive premium base oil and additive technology. Formulated for high-performance across a range of engines and fuel types. Has shown in SAE J1321 Fuel Economy tests up to 3.6% fuel economy improvement for short-haul (Class 6) trucks and up to 1% fuel economy improvement for long-haul (Class 8) trucks compared to SAE 15W-40 oil. Minimizes ash deposits for longer DPF service intervals.

Delo 400 SD SAE 15W-30  NEW

Delo 400 SD SAE 15W-30 is a premium and innovative diesel engine oil intended for engines that have duty cycles which qualify as “severe duty.” These include reducing idling time by turning the engine off at stops or deliveries, stop-and-go in heavy traffic or city delivery, or situations where engine cooling may be stressed like when towing heavy loads or when cycling between fully-loaded and unloaded in off-road applications.

Delo 400 NG SAE 15W-40 - for mobile Natural Gas

Delo 400 NG with ISOSYN Technology is a premium CNG/LNG oil formulated to deliver outstanding protection and long drain performance in a wide variety of compressed natural gas CNG, liquefied natural gas LNG and liquefied petroleum gas LPG engine applications. It has demonstrated excellent field performance in a variety of operations and has the capability to help customers minimize operating costs in CNG/LNG engines of municipal bus service, line haul and delivery truck service, waste truck operations and off road equipment. Approved against Cummins CES 20074 for CNG/LNG performance. Approved for use in Cummins 8.3G, ISL G and ISX 12G engines.

Notable Delo Motor Oils:

Delo 400 LE SAE 15W-40

Delo 400 LE SAE 15W-40 is formulated to meet the requirements of post-2007 low emission engines equiped with advanced emission control technologies. Provides outstanding performance with Ultra Low Sulfur Diesel and also with normal and low sulfur diesel fuels, Delo 400 LE is backward compatible and may be used in older, conventional engines and gasoline engines.

Delo 400 Synthetic SAE 0W-30

Chevron Delo 400 Synthetic heavy duty motor oil is a multipurpose, 100% synthetic lubricant formulated for use in diesel and gasoline engines operating in subzero temperatures. Its excellent low temperature pumpability leads to less wear at start-up and maintains excellent oil circulation once the engine has started, helping to maximize engine life.

Delo 400 Multigrade SAE 15W-40

Delo 400 Multigrade SAE 15W-40 is a premium quality engine oil designed for pre-2007 engines and higher sulfur fuels (> 500 ppm sulfur). With exceptional soot dispersancy and wear control, Delo 400 Multigrade SAE 15W-40 protects cylinders, pistons, rings, and injectors against wear and corrosion, providing optimum service life and minimal maintenance.

Ursa Super Plus EC

Ursa Super plus EC SAE 15w-40 is a mixed fleet motor oil recommended for all naturally aspirated and turbo charged four-stroke diesel engines and four stroke gasoline engines. Meets current engine oil requirements for CJ-4. A solid performer in tests with a proven long term record, this product competes very effectively with fleet type oils.

Delo 710 LE SAE 20W-40

Delo 710 LE SAE 20W-40 is a premium quality diesel engine oil designed for use in marine and railroad applications. Designed for use in both Low Sulfur Diesel (LSD) and Ultra Low Sulfur Diesel (ULSD) engines, Delo 710 delivers value through offering excellent wear control and deposit control while maximizing engine cleanliness for longer oil life and reduced oil consumption as compared to monograde engine oils.


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