Best Oil For 5.9 Cummins – The Complete Guide

We can say oil is the heart of an engine. It saves the engine life by protecting from all friction, cooling, cleaning, sealing, shock dampening, energy transferring, and corrosion.

So, to keep your engine, the 5.9 Cummins, in good progress, you should use high-quality synthetic oil and change it regularly. But which one is your engine’s cup of tea?

In the local market, you will mostly get different types of engine oil but cheap and low quality, which would harm your engine. Be careful and don’t be exploited by them.

Be wise and keen while purchasing good oil for 5.9. Either you would be a great sufferer with those of local oils.

Comparison Table:

Let’s check out this table to compare the oil for 5.9 Cummins.





Valvoline Premium Blue 8600 ES


Castrol EDGE Full Synthetic Motor Oil


AmazonBasics High Mileage Motor Oil


Shell Rotella T6 SAE


Schaeffer Manufacturing Co. Advantage


Royal Purple Duralec Super



Mobil 1 Delvac 1300 Super


A Bit of 5.9 Cummins Engine

There is no doubt that Cummins has been running its business successfully for 30 years in automotive history. They intended to make engines suitable for on and off-highway and light-duty or medium-duty applications.

Comparably, the 5.9 Cummins is the most durable and reliable engine. All the interior parts of it have a wide range of longevity. However, the 5.9 Cummins is best for buses or Dodge or Ram pickup trucks.

Recommended Oil Types for 5.9 Cummins

Since the oil of high ash may cause deposits which could be the reason for valve burning, the recommendation for 5.9 Cummins 12 and 24 valve engines is the oil with low ash.

When you want to sort out the best oil for 5.9 Cummins diesel, you also have to maintain the oil viscosity.

Therefore, oil viscosity is essential before preferring the best oils for your 5.9 Cummins. Hence, for your better consideration, we are helping you look at an oil viscosity chart so that you can sort out the perfect viscosity according to your engine’s necessity.

Hopefully, it would help to get the proper oil requirements and recommendations.

24 Valve, common rail -5.9L Cummins ISB Oil Viscosity Chart (2003 – 2007)

Ambient Temperature RangeOil ViscosityMore than 0° FSAE 15W-40All temperaturesSAE 5W-40 full synthetic

24 Valve, 5.9L Cummins Viscosity Chart (1998– 2002)

Ambient Temperature RangeOil ViscosityMore than 10° FSAE 15W-400 to 30°F (with engine block heater)SAE 10W-30-10 F to 30°F( with engine block heater)SAE 10W-30-10 to 0°F( with engine block heater)SAE 5W-30

12 Valve, 5.9L Cummins (1989-1998)

Ambient TemperatureOil ViscosityMore than 10° FSAE 15W-40From 0 to 10° FSAE 10W-30Less than 0° F (with heater)SAE 10W-30Less than 0° F (without heater)SAE 5W-30

5.9 Cummins Oil filter size and capacity?

The engine should have a specific filter size and capacity. At the same time, every oil user has some queries about the oil filter or accommodation of 5.9 Cummins.

After examining, we have got that the oil capacity of 5.9 Cummins versions is 12-quart but with filter change. Also, the same as the oil filter.

But we can say. Also, the Fleetguard Oil Filter LF16035 is a good oil filter and fits well the Dodge Cummins 5.9 Diesel Engine.

The Best Oil for 5.9 Cummins

Without oil, the engine’s life is no more. So, durable and good oil is vital for an engine’s driving force. But which specific oil suits your machine best. Little confusion while buying? Please stay connected with us.
The manufacturer of Cummins specially put forward the Valvoline Premium Blue and Valvoline premium blue extreme full synthetic engine oil as the best-recommended oil for 5.9 Cummins.

For better decisions, here we are upholding some of the best oil for 5.9 Cummins in the market.

1 – Valvoline Premium Blue 8600 ES SAE 15W-40

Competitively, Premium Blue is the best for the protection and lubrication of the 5.9 Cummins. The engineers of Cummins and Valvoline collaboratively ensure this for the Cumin’s highest level of performance.

Yes, it’s one solution technology that is much better suitable for heavy-duty diesel or gas engines. With the help of a robust additive package, it keeps your 5.9 Cummins clean. When the engine produces abrasive soot, it controls it efficiently.

Using Dispersive Polymer Technology (DPT), it suppresses foaming and holds back engine corrosion. Furthermore, you will get a safe and fast start even at freezing temperature for its terrific cold pump ability. Overall, it is the best and outstanding for 5.9 Cumins.

Viscosity15W-40Liquid Volume1 GallonSheerness4.5 out of 5 Mileage4.7 out of 5 Longevity4.8 out of 5 MaterialSyntheticWeather conditionWarm weather


It is cheaper than any full synthetic oilnIt provides superb wear protection.nIts excellent oxidation resistance takes for granted the long life of the oil.

2 – Castrol EDGE 5W-40 A3/B4 Advanced Full Synthetic Motor Oil

You would have no worries to switch to this unique SAE 5w-40 full synthetic motor oil. Most importantly, it has a wide range of features and specifications. Indeed, after using it, you will get your engine rust and corrosion-free.

With the Castrol Edge motor oil, you will get superior mechanical performance for not using any crude oil in the mixture. This synthetic oil is skilful for your rugged working engine because its Improved wear protection reduces wear and tear. So, it can perform all your expected functions perfectly.

Plus, its excellent lubrication capacity helps your engine run smoothly and great. Over and above that, it protects the engine impressively against wear, deposits, and oxidation to keep the fuel clean.

Viscosity5W-40Liquid Volume32 Fluid OuncesSheerness4.6 out of 5 Mileage4.7 out of 5 Longevity4.7 out of 5 MaterialSyntheticWeather conditionBetter for cold weather


Outstanding engine protection.nNo crude oil in the mixture.nSuitable for cold weather.

3 – AmazonBasics High Mileage Motor Oil

This fully synthetic 5w30 oil is ideal for high mileage 5.9 Cummins. Reducing friction protects engine wear to give you smooth riding. It can even prevent soot build-up without causing rust and corrosion. As a result, your engine gets durability and a longer life span.

It highly resists viscosity and reduces wear-out emissions from 5.9L Cummins. Also magnificent for longer changing intervals while driving. Additionally, you will get superior resistance with its additives package so that your Cumins will get prevention from thermal breakdown. Above all, its oil consumption control that is lower oil volatility is impressive without a doubt.

Viscosity5W-30Liquid Volume160 Fluid OuncesSheerness4.6 out of 5 Mileage4.7 out of 5 Longevity4.6 out of 5 MaterialSyntheticWeather conditionBetter for cold weather


Superior viscosity control.nExcellent prevention of oil breakdown.nIt reduces friction and engine wear.

4 – Shell Rotella T6 SAE 15W-40

Shell Rotella T6 15W-40 is full synthetic diesel engine oil. Exceptionally, it comes with Triple Protection Plus technology which gives protection from wear, oil breakdown, and deposits. Ao, we can say that it is the best oil additive for 5.9 Cummins.

Through this synthetic oil, you will get better gas mileage by reducing engine friction. The fuel doesn’t burn more, so you will get fewer emissions.

Again, you can get Increased shear stability which controls optimal engine oil pressure and viscosity. Moreover, You can get its magnificent cold climate protection with low-temperature pumpability even at 15 °C.

Viscosity15W-40Liquid Volume384 Fluid OuncesSheerness4.4 out of 5 Mileage4.8 out of 5 Longevity4.7 out of 5 MaterialSyntheticWeather conditionBetter for cold weather


Easy pouring handy gallon bottle.nLow ash formulation.nOil oxidation control.

5 – Schaeffer Manufacturing Co. SynShield Durability Advantage SAE 15W-40

Schaeffer Manufacturing Co. named this oil “Durability Advantage” because it exceeded the API CK-4 requirements. It gives 85% wear protection, which is impossible for conventional CJ-4 engine oils.

Using MicronMoly and Penetro friction modifiers generates a hard-wearing but slippery support between metal to metal contact.

Constructively, being parasynthetic, it contains low volatility, which controls oil consumption and resists oil thickening greatly. Also, it has low-temperature pumpability. So, you will get a reliable startup in cold- weather. Overall, with its additive composition, it can clean and protect the deposits wonderfully.

While compared with conventional CJ-4 oils, it has 77% soot control power. Herewith the soot dispersants protect overloaded soot and clean the piston.

Viscosity15W-40Liquid Volume16384 Fluid OuncesSheerness4.3 out of 5 Mileage4.8 out of 5 Longevity4.7 out of 5 MaterialSAE SyntheticWeather conditionBetter for cold weather


Low ash formula.nIt has excellent protection against wear, oxidation, and deposits.nResist aeration and foaming.

6 – Royal Purple Duralec Super SAE 15W-40

It is a high-quality oil with a reasonable price that comes with some compelling features like fuel economy, cold temperature starting, and deposit formation.

Its excellent lubrication capacity and synthetic composition will provide super oxidation stability that can resist the highest temperatures.

Its outstanding protection against deposit and sludge formation ensures continued engine performance during all operating and weather conditions.

With this engine seal-friendly oil, you would get optimal lubrication for your 5.9 Cummins. It also performs excellently in drain intervals by getting together its low volatility.

The super Additive Composition provides outstanding wear protection and cleaning ability. So, it can protect your engine from acid corrosion or rust.

Viscosity15W-40Liquid Volume1 QuartSheerness4.5 out of 5 Mileage4.5 out of 5 Longevity4.9 out of 5 MaterialSAE SyntheticWeather conditionBetter for cold weather


It has outstanding oxidation stability.nExcellent cleaning additives.nHighly compatible with mineral oils.

7- Mobil 1 Delvac 1300 Super SAE 15W-40

Mobil 1 Delvac 1300 Super SAE 15W-40 is an excellent high-mileage oil. In as much as with its extraordinary lubrication and protection, it is a synthetic blend diesel engine oil. Since it meets the requirements for API CK-4, you can even use it in the latest emissions control systems or older diesel engines or 5.9 Cummins.

Being synthetic, it has delicate oxidation stability. So, the oil will not get thickened or clogged with deposits. Also, it is capable of draining oil. Therefore, no worries to change oil continually.

You would get this oil as fluid even in cold weather. Hence, it provides the engine with a smooth start. It also protects the valvetrain, bearings, and vital lubrication points.

Viscosity15W-40Liquid Volume128 Fluid OuncesMileage4.7 out of 5 Longevity4.8 out of 5 MaterialSyntheticWeather conditionBetter for cold weather


The additive system extends the engine life.nIt provides masterly engine efficiency.nLess friction.


u003cstrongu003eWhy is 5.9 Cummins a Good Engine?u003c/strongu003e

The 5.9 Cummins would be an excellent engine for those who don’t have any concerns about the fuel system. You would be satisfied with its rods, piston, and crank because they will last for a more extended period.

u003cstrongu003eWhich Cummins is better? 12 or 24 valves?u003c/strongu003e

Compared to 24v engines, we can say 12v 5.9 Cummins wins for its high performance and power. It can give its better even at extreme power levels.


The function of the oil is not only to supply the energy but also to protect against corrosion to your engines. For getting your engine more efficient, you have to use the best oil for 5.9 Cummins. But

What kind of oil does a 5.9 Cummins take? Or which is the best oil for 5.9 Cummins 24v or best oil for 5.9 Cummins 12 valve? It is a bit confusing. Through researching all reviews and according to the recommendation of Cummins engineers, the advice goes to Valvoline’s Premium Blue. It has all the required features for 5.9 Cummins.

But different oils come with additional features and you have to go to a decision about which one fits your engine best. So, don’t worry, this article will hopefully help you to bring the best one and make you happy with the best purchase.

Best Oil For 5.9 Cummins – The Complete Guide