6.7 Cummins Oil Capacity: The Volume of Oil for Cummins

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Knowing the 6.7 Cummins oil capacity helps drivers to change the motor oil themselves and save some money while doing that. However, the oil capacity of the 6.7L Cumming turbo engine isn’t straightforward as it depends on the type.

6.7 Cummins Oil Capacity

The older engines may require less oil than the newer ones for obvious reasons. This complete guide will take a look at the amount of engine oil required to keep the Cummins 6.7-liter engine running smoothly.

What Is Your 6.7 Cummins Oil Capacity?

Your 6.7L Cummins oil capacity is 12 quarts for engines that were produced after 2010. However, the ones that come before 2010 could have a lower oil capacity, with some sources listing 11 quarts. All these answers may be correct, depending on the engine’s installation.

– An Analysis of Different Engine Oil Volumes for the 6.7L Cummins

When you’re doing a filter change as well as changing the engine oil of the Dodge Ram made after 2010, then you’ll need 12 quarts of oil (3 gallons of oil). However, if the filter change is not required, then 10 quarts of diesel engine oil (2.5 gallons) should be enough to keep the engine running fluidly.

Others also use 11 quarts (2.75 gallons) when they change their engine oil and their engines perform efficiently. Thus, we recommend that you keep the oil volume between 10 and 11 quarts when you’re not changing the filter.

Note that the newer Dodge Rams produced after 2010 may require lesser or more oil volume depending on the model. Therefore, we advise you to consult the vehicle’s manual before changing the oil. Also, keep in mind that underfilling or overfilling the motor oil capacity could lead to serious problems for the engine, thus exercise extreme caution. If you’re not sure how to check or refill the oil of your engine, see a mechanic for help and directions.

– An Overview of the 6.7L Cummins Diesel Engine

The Cummins turbo 6.7 liter diesel engine is a very powerful engine that generates 400 horsepower and boasts a torque of 1,000 pound-feet. It is designed for heavy-duty use such as trucks, construction vehicles and buses. Interestingly, the engine consumes less fuel compared to its competitors due to its efficient use of fuel. It is popular for its durability, reliability and efficiency even under duress and extreme weather conditions.

When combined with the AISIN AS69RC six-speed automatic transmission, the 6.7L Cummins engine enables the Dodge RAM 3500 to tow loads of up to 31,000 pounds. The engine also boasts a 15,000-mile oil change interval, which is the best of oil change intervals. It is mainly used as an option for the RAM 2500 and RAM 3500 pickup trucks produced by the Dodge company.

The engine is produced by Cummins Inc. which was founded in 1919 as Cummins Engines Company until 2001 when its name was changed. Its headquarters is in Columbus, Indiana and its engines are sold in over 190 countries.

– 6.7L Cummins Diesel Engine Reliability

This is one of the strongest engines that ensures high performance and great fuel efficiency.

6.7L Cummins Diesel Engine Reliability

It works well in both colder and warmer temperatures and only requires an oil change after 15,000 miles.

– The Type of Oil That the 6.7L Cummins Engine Requires

The type of oil you use in Cummins engines will determine the engine’s performance and longevity. Most experts recommend that drivers use a synthetic 5W-40 or 15W-40 oil, depending on the driving conditions. When driving in temperatures that are below 32 degrees Fahrenheit, then the 5W-40 is preferable, but when driving in temperatures above 32 degrees Fahrenheit, use the 15W-40 diesel oil instead.

Using 15W-40 oil is great for a 6.7L Cummins engine, however, it works best when you use it during warmer weather. For colder temperatures, again use the 5W-40 oil.

– Oil Capacity of 2022 Dodge RAM 2500

Just like the 2021 6.7 Cummins oil capacity, the 2022 Ram 2500 takes 12 quarts of oil and is the same for 2020 6.7 Cummins oil capacity with filter, 2019 6.7 Cummins oil capacity, 2016 6.7 Cummins oil capacity, and 2012 6.7 Cummins oil capacity.

Why Should You Use Synthetic Oil in Your 6.7L Cummins Engine?

You should use synthetic oil in your 6.7L Cummins engine for many reasons, including excellent engine performance, endurance and longevity. Also, synthetic oils contain additives that are made to suit your engine and leave the engine clean of deposits that may hamper its efficiency and strength.

– Man-made Oils Provide Better Use Quality Base Oils

Synthetics have better base oil than conventional oils, which is essential in a high-performance engine like the 6.7L Cummins engine. The base oils in the synthetics make it more stabilized chemically, which means they work well even in extreme weather conditions.

Also, synthetics don’t oxidize and acidify easily compared to the conventional oil. Oxidation is when the oil forms a sludge, thickens or depletes as a result of mixing with air and this happens quickly with traditional oils.

– Synthetics Are Tailored to Suit Specific Engines

Unlike traditional oils, synthetics don’t take the one-size-fits-all approach to oil production. Instead, synthetics are made to suit specific engines, which is why we recommended a type of oil for the 6.7L Cummins.

Synthetics go through a rigorous and complex process that ensures that impurities are removed and the molecular structures adjusted to modern engine demands. The adjusted molecules improve the performance of the engine while protecting the oil from problems associated with traditional oils.

– Synthetics Clean the Engine

When the oil moves through the engine, it picks up impurities which quickly turn it into sludge, affecting the life of the engine. However, synthetics contain little to no impurities and hardly sludge when it comes into contact with impurities. Thus, it can clean the engine of impurities with a single oil change and keeps it running smoothly. This lengthens the life of the engine and keeps parts of the engine in perfect condition.

Synthetics Clean the Engine

However, take note that synthetics are more costly than traditional oils for obvious reasons, but they are worth purchasing. To choose the correct oil for your vehicle, visit an accredited and trusted mechanic to help you out.

How To Change the Oil for the 6.7 Liter Cummins?

To change the oil for the 6.7 Liter Cummins, first make sure that you have all the materials ready. Place the drain pan under the oil pan and pop off the drain plug. After all the oil has been drained out, replace the drain plug and tighten it.

– Prepare Your Materials

If you decide to change oil yourself instead of taking it to the mechanic, then be prepared to get your hands dirty. The steps are not complicated, but follow them with care to avoid complicating things. The items you’ll need to carry out a successful oil replacement include oil, fuel filter water separator and oil filter set (Mopar oil filter 5083285AA, LF16035 Fleetguard lube filter or Cummins oil filter 187-1000 is preferable), drain pan and flexible rubber funnel.

– Remove the Drain Plug

Once your items are ready, start by placing the drain pan underneath the oil pan and take away the drain plug on the oil pan with a wrench.

Remove the Oil Filter

This will cause the old oil to flow into the drain pan and we advise that you wait until the last drop of oil flows from the engine. After the old oil has finished flowing, put the drain plug back into its place and tighten it.

– Remove the Oil Filter

Next, remove the oil filter located on the side of the engine and replace it with a new one.

Remove the Oil Filter

Pour the new oil into the engine oil pan by using the funnel and tighten its cover, after which you start the car and let the engine run by itself for a few minutes. 

– Check the Oil Level

Use the dipstick to determine if the oil is at its proper level according to the car’s manual. If it isn’t, you can pour more oil but remember not to add too much as that may negatively affect the engine. Also, take note that low oil pressure can hurt the engine so be on the lookout. However, the average replacement cost for Cummins oil change is between $70 and $200, excluding labor costs and price of parts.

– Be Aware of Vehicle Low Oil Pressure Signs

There are some signals that your car gives to indicate low oil pressure and a few of them can be found below.

An oil warning light on the dashboard may illuminate to indicate that the oil pressure in the engine is low and may need a top-up or replacement. The oil warning light could also indicate dirty oil or oil leakage. Another signal is the low reading on the oil pressure gauge. An oil pressure gauge is a car instrument that can tell the amount of oil in the engine and indicate the health of the engine.

If you hear strange noises coming from the engine, especially the sound of metals grinding against each other, then it is a sure sign that the oil pressure is low. If your vehicle vibrates excessively when idling, then you should check it for low oil pressure. All these indicators should be checked by a professional to ensure a strong and healthy engine.

What Is the Recommended Oil Capacity for a 6.7 Cummins Engine?

The recommended oil capacity for a 6.7 Cummins engine is crucial to maintain optimal performance. Neglecting to adhere to this recommendation can result in serious consequences. Overfilling the engine with excess oil can lead to increased pressure, potential leaks, and ultimately, can spill oil damage engine components. Ensuring the correct oil capacity is maintained is vital for the longevity and efficiency of the 6.7 Cummins engine.


So far, we’ve looked at the 2022 6.7 Cummins oil capacity, how to change the oil, and the reasons why man-made oils should be used in the 6.7L Cummins engine. Here is a recap of all that we’ve read so far:

  • The 6.7L Cummins turbo engine takes 12 quarts of oil for the engines that were produced after 2010.
  • However, engines produced after 2010 have different oil capacities and thus the car’s manual should be consulted to know the exact amount of oil needed.
  • Always use synthetics for the Cummins engine as the oils are specifically designed to suit the strength and enhance the performance of the engine.
  • It is better to use 5W-40 oil for colder climates and use 15W-40 oil for warmer temperatures to get the best out of the engine.
  • Using traditional oil may cause sludge, which could thicken and cause the engine to malfunction.

Changing the oil of the Cummins engine shouldn’t be a big deal but if you come up short, then don’t hesitate to call an expert for help. The 6.7 Cummins oil change interval is one of the best in its class.

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