Mobil Delvac

Mobil Delvac is specially engineered to deliver long engine life and maximize performance. We are committed to continuously improving our products through extensive research and testing to meet the needs of our consumers. Whether on the road or on the job site, the proven performance of Mobil Delvac is designed for use in all types of diesel applications - from 18 wheelers and heavy farming equipment to powerful diesel trucks.

Top Five Reasons to Switch to Mobil Delvac

  1. Only 15W-40 selected by GM for its dealer oil program.
  2. Technology chosen by the world's five largest heavy-duty diesel engine builders.
  3. #1 brand of diesel engine oil sold at truck stops.*
  4. Helps extend engine life with its unique additive system.
  5. Helps minimize engine wear and reduce deposit formation.

*Based upon 2009 survey of bulk diesel oil sales at U.S. truck stops.

Why Synthetics?

A synthetic lubricant contains more highly refined base oils than those used in conventional mineral oils, offering you superior protection and performance. Synthetic engine oils provide a variety of benefits that HELP keep your engine running at optimal performance for years.

To understand synthetic engine oils, let's look at the origins of engine oil. There are two basic types of lubricants available:

  • Conventional mineral oils are the traditional types
  • Synthetic lubricants, which are growing in popularity

Both types are made from crude oil that comes from the ground. The difference is that synthetic oils are made from more advanced refining processes and are of a higher purity and quality than conventional mineral oils. This not only removes more impurities from the crude oil, it enables individual molecules in the oil to be tailored to the demands of modern engines. These customized molecules provide higher levels of protection and performance.

The performance of synthetic oils is typically more robust, especially in terms of low temperature pumpability and high temperature stability and protection against deposits.

Excellent low temperature flow performance - Pour point is a measure of a lubricant's ability to flow at low temperatures. Mobil Delvac synthetic lubricants are engineered to reduce internal friction, which results in outstanding flow characteristics at low temperatures.

Viscosity stability - Higher viscosity index translates to a more stable viscosity across a broad temperature range. As well as the superior low-temperature performance, Mobil Delvac synthetic lubricants resist thinning at elevated temperatures, resulting in outstanding protection across a greater operating temperature range.

Improved oxidation and thermal stability - Improved oxidation stability and thermal stability in Mobil Delvac synthetic lubricants compared to mineral oils result in less viscosity increase with age and better deposit control, which leads to fewer oil changes, less downtime with the potential for extended oil drain intervals, all of which ultimately save you time and money.

Excellent wear protection - Newer vehicles must be able to handle higher torque and increased shock loads. Compared to mineral oil based drivetrain lubricants, Mobil Delvac synthetic drivetrain lubricants provide superior anti-scoring performance, which helps increase gear life at high speeds and under shock loading conditions. Mobil Delvac 1 ESP 5W-40 provides excellent wear protection.

Frequently Asked Questions

Is it true that the quality of an oil can be determined by its color or thickness (viscosity)?
While an oil's viscosity is an important characteristic, it actually does not say anything about an oil's quality; nor does the oil's color. To be sure you're buying a quality oil just look at the bottle and ask yourself a few questions: Is the product a reputable brand like Mobil Delvac? Do the industry and original equipment manufacturer specifications listed meet the needs of my equipment? Am I buying the oil from a reputable store or distributor? Is there a way to make sure I am buying an authentic product? If you can answer yes to all of these questions, you know you are buying a quality product.

I've heard that as long as you change your oil regularly, it's okay to buy the cheapest oil possible. Is this accurate?
Some people equate cheap oil with the inexpensive cost of operation. But this is a myth. The minute a piece of equipment is filled with an oil, the oil leaves its legacy behind. When comparing a premium product like Mobil Delvac to a cheap oil, the cheap oil would lead to higher wear rates and increased formation of deposit, varnish, and sludge - all leading to high maintenance costs and reduced equipment life. So, while the cheap oil may cost less to buy, Mobil Delvac will cost less to own.

Can Mobil Delvac guarantee a certain amount of engine life without an overhaul?
Mobil Delvac will help you achieve maximum engine-life performance. However, the actual life of an engine prior to overhaul depends on many variables: choice of oil, oil-drain interval, maintenance practices, terrain traveled, driving habits, fuel quality, load carried, and ambient temperature (to name just a few). But using Mobil Delvac will certainly help keep the engine-life odds in your favor.

Today, we see many of our successful trucking fleets and owner/operators able to successfully take their vehicles to one million miles or more before an overhaul thanks in part to Mobil Delvac and a commitment to proactive maintenance.

Does my engine oil impact my fuel economy?
Proper choice of oil, both in the engine and driveline, can have a major impact on fuel economy. A few things to consider: a multigrade product tends to provide better fuel economy than a monograde (e.g., a 15W-40 is better than a 40 grade); lower viscosity products tend to provide better fuel economy than higher viscosity products (e.g., a 15W-40 provides better fuel economy than both a 20W-40 and a 15W-50). As equipment ages, deposits and wear accumulate, resulting in a decrease in equipment efficiency. Mobil Delvac is able to protect the engine against deposit formation and wear, allowing the equipment to maintain fuel economy throughout its life.

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