Best Synthetic Oil for Diesel Engines - Car of Steel

Best Synthetic Oil for Diesel Engines

Best Synthetic Oil for Diesel Engines

Whenever it comes to motor engine oil, then synthetic oil stays on the top every time. Even for diesel engines, synthetic oil can do wonders.

To run a diesel engine smoothly, you would need great oil enriched with additives and beautifully refined. For that, we have put together a list of the best synthetic oil for diesel engines.

Top 5 best synthetic oil for diesel engines:

1. Castrol 03087 EDGE Extended Performance 5W-30 Advanced Full Synthetic Motor Oil, 5 Quart:

Castrol 03087 EDGE Extended Performance 5W-30 Advanced Full Synthetic Motor Oil, 5 Quart

Castor Oil Company has a big name in the market for its outstanding line of high-quality enriched oil.

In terms of performance, this oil is specially made for a diesel engine with heavy usage in harsh conditions.

Thus it is very suitable oil for an engine that goes through high pressure.

This oil comes with titanium fluid technology, and it is one of the best features of the oil. Castrol spent many years developing this technology, and it indeed paid off.

Because of this technology, the oil doesn’t break down due to very low viscosity and reduces friction. This oil also helps to reduce deposits build-ups and ensures the engine stays clean.

This is one of the best oil for aspirated diesel engines, and it also improves engine performance. If you use this oil, we are sure that your machine would have a longer life span.

This oil can take on 20000 easily, and it is one of its unique perks. You don’t have to worry about changing them frequently. Thus you can enjoy a carefree day.


1] Best for diesel engines

2] Great in rough conditions

3] Titanium technology


1] Slightly pricey

2. Mobil 1 120760 Synthetic Motor Oil 0W-40, 5 Quart:

Mobil 1 120760 Synthetic Motor Oil 0W-40, 5 Quart

Mobil 1 provides the best quality oil in the market and is loved by many because of its high-quality oil. The one we will be discussing is Mobil 1 120760.

This oil is one of the best when it comes to diesel engine oil. This oil ensures to keep your engine healthy and clean by clearing out the deposits and sludge.

We know diesel engines build up high temperatures. So, sludge can build up quickly. But this oil will indeed prevent it.

 Besides all that this oil is suitable for high temperatures and operates smoothly in heavy pressure.

This oil can perform exceptionally at low temperatures as well. Many of the standard conventional oil comes with a high volatility rate thus, it means you will need to use more oil.

But in the case of synthetic oil, it comes with low volatile. You will end up using way less than conventional oil. That means due to less consumption rate. You will end up saving lots of money by using this oil.

This oil comes with special additives, which are suitable for your engine. These additives will also ensure a higher life span of the machine. This oil will also improve the performance of your vehicle. Thus overall, it’s an excellent choice for your diesel engine.


1] Performs smoothly in harsh conditions

2] Can take on pressure easily

3] Great quality oil


1] Doesn’t provide a great millage.

3. Shell Rotella T4 Triple Protection Conventional 15W-40 Diesel Engine Oil (1-Gallon, Single Pack):

Shell Rotella T4 Triple Protection Conventional 15W-40 Diesel Engine Oil (1-Gallon, Single Pack)

Shell Rotella is one of the prominent providers of heavy-duty engine oil. When it comes to diesel engine oil Shell Rotella is one of the best in the market.

This shell Rotella T4 comes with triple protection technology. Thus it ensures absolute protection of the engine from wear, sludge, and deposits.

We can assure you that you can rely on the oil for high engine protection. So due to enhanced safety, the life span of the engine improves. Due to the T4 technology, the oil doesn’t break down in high pressure or temperature.

Shell Rotella also ensures great mileage and smooth engine operation along with maximum performance. This oil is perfect for most of the diesel engines, along with heavy-duty diesel engines.

This oil also offers excellent control of viscosity and enhances the performance of the engine.

For high power engines, this oil is recommended by my reputable engine maker. This oil is also great for old diesel engines. Overall this is one of the diesel engine oil.


1] Great protection technology.

2] Trusted by many engine builders

3] Great for both high and low-temperature conditions.


1] Frequent oil change might be required.

4. Valvoline Premium Blue Extreme SAE 5W-40 Full Synthetic Engine Oil 1 GA, Case of 3:

Diesel engines are potent and for smooth transactions of the power, you will need great synthetic oil. And Valvoline premium blue extreme is one of the best synthetic oil for the diesel engine.

This synthetic engine oil provides excellent lubrication and protection for the engine. Most of the engine oil kind of frizzes in low-temperature weather if the engine is kept idle overnight.

Thus the next morning, when you try to start up the engine, it doesn’t start up and creates many problems. But with this synthetic oil, you can forget about this kind of situation and efficiently start up the car.

Because of the outstanding thermal capabilities, this oil performs exceptionally in cold and hot weather situations.

This oil is also great at cleaning up sludge and keeping the engine in excellent condition. This oil successfully circulates throughout the engine and removes any clog or wastes.

Typically conventional oils for diesel engines are costly and not splendid in most cases, but this oil delivers premium service within a reasonable price range.


1] Great in rough weather conditions

2] Premium performance

3] Reasonable pricing


1] Not useable of bike engines

5. Royal Purple 04154 15W40 Oil One Gallon:

Royal Purple 04154 15W40 Oil One Gallon

Royal purple is one of the reputed engine oil companies. They got to the top by providing high-quality engine oil to the customers.

This specific engine oil is popular among car enthusiasts because of its unique versatility. This oil is great for diesel engines along with gasoline engines.

Royal purple 04154 is also healthier than many synthetic oils in the market. Many car enthusiasts make this claim along with many testing.

Royal purple 04154 is fully synthetic oil, and it is developed with many beneficial additives. This additive helps to keep the engine clean along with boosting the life span of the machine.

It protects from rust too. Besides all of these great features, this oil also provides superior mileage. But if you use an old engine then we recommend changing the oil every 4000 km.

This oil also decreases the piston friction by a lot due to advance additives included in the oil. Overall it comes with exceptional features. Thus we are confident it will be an excellent fit for the diesel engine.


1] Great wear and rust protection system

2] Best lubrication system

3] Compatible with oils containing ethanol.


1] Slightly pricey

How to Choose the Best synthetic oil for diesel engines:

To choose the best diesel engine synthetic oil you should keep in mind about the followings:

 Cleaning Properties:

The oil industry is huge and there are varieties of oil in the market for a diesel engine. But not every oil company provides the cleaning agent within the oil and some don’t even have that advanced technology.

While buying engine oil, one should look for such oil with advanced technologies and cleaning agents.

This will ensure that the engine’s internal parts stay clean, and thus the engine’s life span will increase.


Temperature is a significant factor when it comes to engine oils. We know the engine produces high temperatures and many oils start to break down and start to leak.

On the other hand, some oil freezes up if the engine is kept idle overnight. And the weather factor of your area is also crucial to consider.

So you can choose the best oil that will compliment your engine perfectly in diverse weather conditions.

Engine protection:

The engine is known as the heart of a vehicle. Thus using the best oil for the engine will come in handy a lot.

Engine oil is developed with many additives and most of them are very beneficial for the engine.

Some additives take part in as a cleaning agent and some take part in enhancing performance. Overall, additives provide enhanced protection and boost for the engine.


1] Is synthetic oil better for diesel engines?

Answer: yes synthetic oils are better for the diesel engine. Synthetic oil provides better lubrication than regular conventional oil.

2] How often should you change synthetic oil in a diesel?

Answer: This depends on the engine oil. You should check the oil regularly. If you feel like the oil is getting darker and needs a change, you should change it. And try to change oil frequently as burned oils stars to create sludge and blocks.

3] Why are diesel oil changes so expensive?

Answer: diesel engines require the best quality oil for the best performance. Thus the oil cost is a bit pricey. Premium quality oil comes at a premium quality price. 


Using good engine oil is a very efficient way to save money because your vehicle’s diesel engine stays healthy and a more significant life span.

We have mentioned the best synthetic oil in the market. All of the mentioned diesel engine oils are best. Thus we hope this article was helpful.