A Guide to Choosing the Best Diesel Engine Oil

Mar, 2017
Best Diesel Engine Oil

Cars cost a lot of money and most people will do everything to add more years to its lifespan. This is the reason why there is a huge market for engine oil in the automotive industry today. Diesel engines need frequent maintenance and oil changes to ensure protection and cleanliness. They also ensure that your engine will run properly and efficiently even when under pressure.

In this article, we will discuss what diesel engine oil is, its importance, and the essential factors to consider. We’ll also discuss some of the top picks of best diesel engine oil so you can make the right choice. By the time you’re done reading this review, we hope you will be able to decide on what to buy.

What is Diesel Engine Oil?


Diesel oil is the oil you use to lubricate your engine and should not be confused with fuel oil. Diesel engine oil changing requires the lubricating oil that is specially designed for the diesel engine, not gasoline engine. The process of choosing must come down to the oil being compatible with your engine. This would ensure that your vehicle parts would run as smoothly and efficiently as possible.

The diesel engine oil is very similar to gasoline engine oil. Both have base oils that are formulated with a variety of additives to change particular oil properties. The difference between the two depends on the amount of additives that are used.

To further discuss, diesel engines absorb more carbon while gasoline engines tend to absorb more moisture and tar. Diesel engine oils contain a higher amount of dispersants and more anti-wear additives. Also, diesel requires higher viscosity in the oil unlike the gasoline engine, which only produces more heat. In sum, diesel engine oils contain more additives because they are subject to harsher conditions.

Top Picks for the Best Diesel Engine Oil

Having a difficult time choosing which diesel engine oil to buy? Below, we will discuss some of the top choices for the best diesel engine oil and their features. For you to evaluate better, we will also provide some of the pros and cons of each product.

1. Castrol EDGE Turbo Diesel Engine Oil 5W-40 5L (German label)

Castrol EDGE Turbo Diesel Engine Oil 5W-40 5L (German label)

With its name, the brand is already an assurance of great quality. In addition, the brand is one of the leading manufacturers of automotive and industrial lubricants.

The Castrol EDGE Turbo Diesel Engine Oil 5W-40 provides maximum wear protection for modern diesel engines. Because of the advances in engine technology, engines are now used with increased power and efficiency. The only thing you need now is to choose the oil that will be able to live up to today’s technological demand.

The product is guaranteed to maximize long-term as well as short-term engine performance. It is also designed to reduce deposits that allow optimum engine response. Another great feature is that it can sustain outstanding performance even when under pressure. The Castrol EDGE 5W-40 is proven to improve the efficiency of your engine, as well as deliver protection.


  • Provides maximum protection for your car engine
  • Offers Fluid Strength Technology
  • Can sustain maximum performance while under pressure
  • Guaranteed to improve your engine’s efficiency
  • Lowers friction
  • Great value for your money


  • Some may consider this oil as average
  • Some buyers may have some issues regarding the delivery

2. Motul 007250 8100 X-cess 5W-40 Synthetic Gasoline and Diesel Engine Oil - 5-Liter Jug by Motul

Motul 007250 8100 X-cess 5W-40 Synthetic Gasoline and Diesel Engine Oil - 5 Liter Jug by Motul

The brand is also one of the industry leaders when it comes to high-performance lubricants. Motul is a French lubricant manufacturer and is very well known worldwide.

The Motul 007250 8100 X-cess 5W-40 is a diesel and petrol engine oil that is 100% synthetic. The product is particularly designed for more modern cars with high displacement engines and catalytic converters. It would also work great for cars equipped with direct injection turbo diesel.

A number of carmakers recommend the Motul 8100 X-cess 5W-40 for multipurpose use. It is suitable for unleaded and leaded petrol, LPG and diesel fuels.


  • Will work great for high displacement engines
  • Proven to keep the engine running cooler
  • Guaranteed to increase fuel efficiency
  • 100% synthetic
  • Suitable for diesel fuel, as well as leaded and unleaded petrol and LPG


  • A little expensive especially for those with a small budget
  • Not environment friendly

3. Shell Rotella 550019921-3PK T6 5W-40 Full Synthetic Heavy Duty Diesel Engine Oil (CJ-4) - 1 Gallon Jug by Shell Rotella

Shell Rotella 550019921-3PK T6 5W-40 Full Synthetic Heavy Duty Diesel Engine Oil (CJ-4) - 1 Gallon Jug by Shell Rotella

Shell Rotella is also a well-known brand when it comes to lubricants. The manufacturer has been around for 40 years and has produced heavy-duty engine oils that offer maximum protection and performance.

The Shell Rotella 550019921-3PK T6 5W-40 oil will provide excellent wear protection and cleanliness to your engine. It is also petrol and diesel oil that is fully synthetic. To add, it features maximum high and low temperature protection and is formulated to be 34% better than previous versions. It is heavy-duty and multi-functional. It can continuously adapt to changing driving conditions.


  • Proven to increase fuel efficiency
  • Effective with regards to resisting breakdown due to heat
  • Provides maximum wear protection and cleanliness
  • Multifunctional
  • Would work great for many vehicles using diesel engines
  • Would keep your engine running smoothly and quietly


  • A little expensive than other brands
  • Oil pressure might be slightly increased

Advantages of a Diesel Engine

Having a diesel engine has a lot of advantages compared to having a gasoline engine. In this section, we will discuss why it is more efficient and why people prefer diesel engine.

  • Older models of diesel engines create a lot of noise and are very costly to maintain. However, modern ones are quiet and they require less maintenance.
  • Unlike the gasoline engine, they are more reliable and rugged.
  • You will notice that there will be no sparks when the fuel auto-ignites. The reason is that there are no spark wires and plugs that also lower the cost of maintenance.
  • Diesel engines are now widely used in most kinds of transportation such as trucks and buses. They are also used in the aircraft industry.
  • They are used for the combustion engines of some rail vehicles.
  • Armored and military vehicles also use this type of engine because they are unlikely to be flammable. This means that it is safer to have instead of gasoline.
  • Aside from cars, heavy equipment, tractors and other industrial applications also use diesel engines.
  • Diesel provides higher mileage, the reason why it’s preferred for heavy-duty transportation and equipment.
  • Though it may be more expensive than gasoline, diesel has higher density, which means more energy can be extracted.
  • Diesel is proven to be more efficient and cost effective than gasoline. With proper maintenance, it can be assured to give your vehicle a longer lifespan.

Factors to Consider when Choosing the Best Diesel Engine Oil

In order for you to decide effectively, you have to know first what makes the best diesel engine oil. In this section, we will discuss some of the factors you might want to consider to make the right choice.

  • Viscosity Grade: Utilize the viscosity grade as advised by the original equipment manufacturer. This is very important, as it will determine the starting temperatures of your engine. You have to pick the lubricant that can deliver maximum performance even under pressure.
  • Cost: The price of your diesel engine oil matters. You have to review what oil will give you great value for your money. There are cheap ones that may or may not perform well. Being expensive is also not a guarantee that it will perform well. The vital part is, it should match your budget.
  • Cleaning Capability: Cleanliness is an important factor to consider when changing oils. You have to make sure that you choose the diesel oil that will also cleanse your engine.
  • Compatibility: Not all engine oils are formulated and are suitable for diesel engines. As discussed above, there is also the gasoline engine that requires a different type of lubricant. You have to make sure that the diesel engine oil is compatible with your engine.•
  • Wear Protection: The diesel oil you should pick should not cause damage to your engine. Instead, it should provide your engine maximum wear protection to prolong its life.
  • Versatility: Choose the diesel engine oil that is multifunctional and the one you can utilize across a number of uses.
  • Efficiency: It will also be good to consider how the engine oil will help you to promote more efficient fuel consumption.


Now that we have reached the end of this article, we hope we gave you some enlightenment. If you were having a hard time deciding, considering the above reviews could be of great help to you. The process of choosing may seem confusing but using this guide can make your decision making a lot easier.

By reviewing the factors mentioned above, it will give you an idea on what and what not to buy. Along with the product reviews, pros and cons, we hope we helped you decide on the best diesel engine oil.

Do you need other products for your car? Click on this link to learn more.

Click here to add a comment