Diesel engines require regular maintenance and oil changes to ensure optimal performance. Engine parts can be cleaned and protected by using oil.
Additionally, it guarantees that even in extremely hot conditions, your engine will function properly and effectively. The best diesel engine oil can withstand high temperatures and properly coat engine parts, decreasing wear.
If you’re looking for diesel engine oil, you might already hear about Delo and Delvac oil. But which one is right for your car? In this article, you will get the answer in detail.
A Quick Comparison Table
| Specifications | Delo | Delvac |
| Company | Chevron | ExxonMobil |
| Product Line | Delo 400, Delo Gold Ultra, Delo Silver | Delvac 1, Delvac Elite, Delvac Extreme |
| Viscosity | 15W-40 | 5W-40, 10W-30 |
| Base Oil | Mineral and synthetic blend | Synthetic |
| Additive Technology | ISOSYN Technology | Advanced technology for soot dispersancy and wear control |
| API Certification | CJ-4, CI-4 PLUS, CI-4, CH-4, SM | CK-4, CJ-4, CI-4 PLUS, CI-4, CH-4 |
| Price | Lower than Delvac | Higher |
In-depth Differentiations Between Delo And Delvac Engine Oil
- Company Reputation
Delo oil is made by Chevron, one of the world’s biggest oil and gas producers, with operations in more than 180 nations.
Chevron is renowned for its unwavering dedication to corporate responsibility, sustainability, and safety.
ExxonMobil, which produces Delvac oil, is also a large oil and gas company with operations in more than 70 countries.
Chevron was founded in 1879 as the Pacific Coast Oil Company, while ExxonMobil was formed in 1999 with the merger of Exxon and Mobil.
Overall, Chevron has more reputation in the engine oil industry.
- Viscosity
Viscosity means the measure of the fluid’s resistance to flow. It is an important property of lubricating oils, as it affects the oil’s ability to provide a protective film between moving parts, reduce friction and wear, and dissipate heat.
Delvac oil typically has a higher viscosity index (VI) than Delo oil. The VI is a measure of how much an oil’s viscosity changes with temperature. A higher VI means that the oil’s viscosity remains more stable over a wider temperature range.
In other words, Delvac oil maintains its viscosity better than Delo oil when subjected to temperature changes.
Delo oil typically has a lower viscosity grade than Delvac oil. The viscosity grade of an oil indicates its thickness or how easily it flows at a certain temperature.
Lower viscosity grade oils are thinner and flow more easily, while higher viscosity grade oils are thicker and flow more slowly. Delo oil typically has a viscosity grade of SAE 15W-40, while Delvac oil typically has a viscosity grade of SAE 5W-40 or SAE 10W-30.
Delo oil is more suitable for older or less-demanding engines, as it provides adequate protection while still allowing the engine to run smoothly.
Delvac oil, on the other hand, is designed for newer and more demanding engines requiring higher protection levels, particularly in extreme temperatures and heavy load conditions.
- Base Oil
Delo oil uses a blend of mineral and synthetic base oils. Mineral base oil is a refined petroleum fraction that is derived from crude oil. It is the most common type of base oil used in lubricants, as it is readily available and relatively inexpensive.
Mineral base oil provides good lubricity and stability but has limited temperature and oxidation resistance. Synthetic base oil, on the other hand, is artificial and designed to have a higher degree of uniformity and purity than mineral oil.
It is typically more expensive than mineral oil due to its complex manufacturing process and a higher degree of refinement. Synthetic base oil offers excellent high-temperature and oxidation resistance and improved low-temperature properties compared to mineral oil.
Delvac oil uses fully synthetic base oil. This means that the entire base oil component of Delvac oil is synthesized from chemical compounds rather than being derived from crude oil.
Fully synthetic base oil offers superior performance compared to mineral oil and even synthetic blend oil.
It has excellent high-temperature and low-temperature properties and exceptional oxidation and shear stability. It also has a higher degree of purity, which means it is less likely to form deposits or sludge in the engine.
However, fully synthetic base oil is more expensive than mineral or synthetic blend oil, making Delvac oil a more costly option.
- Additive Technology
Delo oil uses Chevron’s ISOSYN technology, which blends mineral and synthetic base oils with advanced additive chemistry.
The technology is designed to deliver superior deposit control, wear protection, and oxidation stability.
Delo oil also features detergents and dispersants that help to keep the engine clean and prevent sludge and varnish buildup.
The oil includes friction modifiers that help to reduce friction, improve fuel economy, and optimize engine performance.
On the other hand, Delvac oil uses advanced synthetic additive technology that is explicitly tailored for heavy-duty diesel engines. The technology provides high-performance dispersants that keep soot particles in suspension, preventing them from forming deposits in the engine.
It also includes anti-wear agents that form a protective film on engine components, reducing metal-to-metal contact and extending component life.
Also Read: Differences Between Quaker State And Castrol Oil.
Frequently Asked Questions (FAQ)
Yes, Delo oil is suitable for Cummins engines as it is a high-quality lubricant with advanced additive technology.
Chevron Delo 400 XLE, Valvoline Premium Blue, Mobil Delvac 1300 Super, and Rotella T6 are equivalent to Delo 400.
Synthetic oil is the best for diesel engines.
Yes, Delo oil is suitable for diesel engines as it is specifically designed for diesel applications and features advanced additive technology.
Yes, Mobil Delvac is a high-quality diesel engine oil designed to provide reliable performance and protection in a wide range of operating conditions.
Final Words
Delo and Delvac are high-quality diesel engine oils that are designed to provide high-quality performance. The choice between these two ultimately depends on the specific requirements of the engine and the manufacturer’s recommendations and specifications.
If you’re still stuck in the Delo or Delvac dilemma, consult a qualified mechanic or the engine manufacturer before selecting the one to ensure that it meets the required performance criteria.
