2018 6.7 Cummins Oil Type [Update 2023] ❤️

2018 6.7 Cummins oil preferences. Thread starter true love; Start date Apr 25, 2019; 1; 2; Next. 1 of 2 Go to page. Go. Next Last. Apr 25, 2019 #1 truelove Junior Member.

Joined May 11, 2018 Posts 12 Reaction score 0 Location Houston tx Ram Year … Blackstone has a paper out that is a summarization of individual’s oil analysis that compares various oil labels …

2018 6.7 Cummins Oil Type Introduction

It’s crucial to comprehend what the 2018 6.7 Cummins oil type is and why it matters before getting into the specifics.

A strong, heavy-duty diesel engine that is frequently found in Ram trucks is the 2018 6.7 Cummins engine.

To ensure optimum performance and longevity, it needs an oil that is of a high caliber and adheres to the manufacturer’s recommendations.

Understanding Viscosity Grades for 2018 6.7 Cummins Oil Type

Viscosity is an important aspect to take into account when choosing the best oil for your 2018 6.7 Cummins engine. The ability of an oil to flow at different temperatures or its thickness is both referred to as viscosity.

The Society of Automotive Engineers developed a system for classifying oils based on viscosity grades (SAE).

The recommended viscosity grade for 2018 6.7 Cummins is 15W-40. The oil’s thickness or viscosity at low temperatures is indicated by the first number, 15, in this case.

The viscosity of the oil at high temperatures is represented by the second number, 40. It’s important to select the proper viscosity grade for your engine because it impacts fuel economy and engine wear.

Types of Oil for 2018 6.7 Cummins We Recommend

Both conventional and synthetic oils are compatible with the 2018 6.7 Cummins engine. However, it is essential to pick an oil type that is suitable for the application and complies with the engine’s specifications. Some of the suggested oil types for the 2018 6.7 Cummins are listed below:

Traditional Oil

The most typical oil type for 2018 6.7 Cummins engines is conventional oil. It is an affordable oil type that satisfies the requirements of the manufacturer. However, it does have some drawbacks, such as lower fuel efficiency and fewer oil changes.

Artificial Oil

A premium oil type known as synthetic oil offers better fuel economy, longer oil change intervals, and superior engine protection.

It is a great option for 2018 6.7 Cummins engines that operate in challenging circumstances, like those involving heavy loads or high temperatures. Synthetic oil is more expensive than regular oil, though.

Expensive Oil

A specialized oil type called high-mileage oil is made for engines with more than 75,000 miles on them. It has additives that support engine performance maintenance, leak prevention, and reduced oil consumption. For 2018 6.7 Cummins engines with high mileage, it is a great option.

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Factors to Take into Account When Selecting 2018 6.7 Cummins Oil Type

It can be challenging to select the best oil type for your 2018 6.7 Cummins engine. Here are some things to think about before choosing:

Manufacturer’s Guidelines

Always check the owner’s manual for your engine to find out the recommended oil type and viscosity level. If you use an oil that deviates from the manufacturer’s recommendations, you run the risk of causing damage to your engine and losing your engine warranty.

Planned Use

When choosing the oil type for your 2018 6.7 Cummins engine, take into account how you plan to use it. Synthetic oil might be the best option if you frequently transport heavy loads or work in chilly conditions. However, conventional oil might be adequate if you drive your truck for daily transportation.


Your choice of oil may also be influenced by the environment in which you operate your 2018 6.7 Cummins engine. If you reside in an area with extreme temperatures, such as hot desert climates or cold winter regions, you might need to choose an oil type with a different viscosity grade in order to ensure optimal engine performance.


Your budget is an extremely important factor to take into account when choosing the best oil type for your engine. Although synthetic oil protects engines better than conventional oil, it is more expensive. As a result, you might need to weigh the advantages of the oil type against your spending limit.

Maintenance Advice for Your 2018 6.7 Cummins Engine

The right oil type selection for your 2018 6.7 Cummins engine is only one aspect of the process. Here are some pointers for preserving the durability and performance of your engine:

Observe the suggested oil change intervals.

The manufacturer recommends changing the oil every six months or 7,500 miles, whichever comes first. This advice can assist in avoiding engine damage and extending engine life.

Use top-notch oil filters

High-quality oil filters can help shield your engine from impurities and debris that could harm the engine.

Check the level of your engine oil frequently.

Checking your engine’s oil level frequently can aid in finding leaks or other issues with the engine. Checking the oil level once a month or before long trips are advised.

FAQ 2018 6.7 Cummins oil type

What kind of oil does a 6 7 Cummins take?

And according to the user guidelines, the 6.7 Cummins oil type seems to be API CJ-4/SL designated 15W40 oil. 5W40 oil is also suitable. Manufacturer-Recommended Engine Oil for 6.7 Cummins As always if you want to be a happy truck owner, you better listen to the manufacturers.

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How many quarts of oil does a 2018 Cummins take?

The oil capacity of this engine is 12 US quarts. The 2018 Cummins diesel engine features 385 hp @ 2,800 rpm with 930 lb-ft of torque @1,700 rpm. The recommended oil type for this engine is SAE 15W-40 or SAE 5W-40 full synthetic. The oil capacity of this engine is 12 US quarts.

What kind of oil does the 2019 Cummins 400 take?

The 2019 Cummins diesel engine produces 1,000 lb-ft of torque at 1,800 rpm and 400 horsepower at 2,800 rpm.

Does a Cummins require more oil than other engines?

Limits the frequency of top-ups. A 6.7 Cummins engine is a powerhouse with impressive horsepower and torque. It also means your oil undergoes a lot more strain than it would with a weaker system. Cummins requires a fair bit of oil, though older models tend to consume it in excess (often due to flawed seals).

How long will a 6.7 Cummins last?

Cummins is the very first business to offer a warranty of 100,000 miles and the company is a dependable provider of its products. 

There is a legend that says you can expect 350,000 miles out of your vehicle, but this is only possible with regular filter and oil changes along with responsible driving habits and an understanding of road conditions. 

The minimum is 100,000 miles, however, after the threshold, it’s more of a result that wears and tear is a result of climate and driving habits. Be careful with your Cummins so that it can repay its favor.

How often do you need to change the oil in the 6.7 Cummins?

Follow the maintenance schedule as prescribed by the manufacturer (especially in the case of any type of service contract). 

The frequency of maintenance is based on the age of your vehicle and any damage that may be present caused by road conditions and the kind of oil you use. Since it is also dependent on the type and make that the car is, look at this table to ensure.

It is recommended to change your oil at least every 15,000 miles, but when your warranty requires you to start sooner, adhere to the guidelines.

How much oil should my Cummins need?

It is always advised to follow the manufacturer’s instructions. The manufacturer and model will determine how much oil is required. The typical 6.7 Cummins engine in a vehicle requires 12 quarts of oil to change the oil completely.

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Depending on your car’s condition and the type of oil you’re using, you may need to top off. It is well known that Cummins engines, especially older models, use a lot of oil.

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The performance and longevity of your 2018 6.7 Cummins engine depend on the type of oil you use to maintain it.

Consider the manufacturer’s recommendations, the intended use, the climate, and your budget when selecting the type of oil.

To ensure optimum engine performance and longevity, adhere to the advised oil change intervals, use high-quality oil filters, and frequently check your engine oil level.

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