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What oil does a Ram 2500 6.7 diesel take?


As a seasoned auto service provider, I often receive inquiries about the best oil for specific vehicles. One common question is regarding the Ram 2500 equipped with a 6.7-liter diesel engine. Choosing the right oil is crucial for maintaining engine performance and longevity. In this article, we will explore the recommended oil types for this powerful truck.


Recommended Oil Types


The Ram 2500 6.7 diesel engine is designed to operate efficiently with specific oil types. Here are the recommended options:



  • 5W-40 Synthetic Oil: This is the most commonly recommended oil for the 6.7L Cummins diesel engine. It provides excellent protection in both hot and cold temperatures.

  • 15W-40 Conventional Oil: While not as efficient as synthetic oil, this option is suitable for warmer climates and can be used if synthetic oil is not available.

  • API Certification: Ensure that the oil meets API (American Petroleum Institute) specifications, particularly the CK-4 standard, which is designed for modern diesel engines.


Using the correct oil type not only enhances engine performance but also helps in maintaining warranty coverage and ensuring compliance with manufacturer recommendations.


Oil Change Intervals


Regular oil changes are essential for the health of your Ram 2500's engine. Here are some guidelines for oil change intervals:



  • Every 7,500 miles: This is the standard interval for synthetic oil changes.

  • Every 5,000 miles: If using conventional oil, consider changing it more frequently.

  • Severe Driving Conditions: If you frequently tow heavy loads or drive in extreme conditions, you may need to change the oil more often.


Adhering to these intervals will help ensure that your engine remains in optimal condition and performs at its best.


Conclusion


Choosing the right oil for your Ram 2500 6.7 diesel is vital for maintaining engine health and performance. Opt for high-quality synthetic oil like 5W-40 or conventional oil like 15W-40, and follow the recommended oil change intervals to keep your truck running smoothly. If you have any further questions or need assistance with your vehicle, feel free to reach out to us at Kevin's Autos!


Frequently Asked Questions

Why did Cummins switch to 10W30?


The most common reason for the change is the increase in fuel economy by switching to lower viscosity oil. Fuel economy improvements are correlated with viscosity.



How much oil does a 6.7 Ram 2500 take?


12 quarts
Capacity: 12 quarts (with filter). After filling, start the engine and idle for several minutes.



Can you run 15W40 in a 6.7 Cummins?


Folks…the oil cap says 10W-30 or 5W-40 for severe use on all 6.7 Powerstrokes, for a reason. If you look past the temperature chart in the owner's manual and read the words, you'll find that 15W-40 is only acceptable when running biofuel and is not a substitute for 5W-40 under severe conditions.



What is the best oil for a 6.7 diesel?


The ONLY SYNTHETIC oil specified by the workshop manual for the 6.7L Power Stroke engine is Motorcraft® SAE 5W-40 Full Synthetic Diesel Motor Oil. Motorcraft® SAE 10W-30 Super Duty Diesel Motor Oil is considered the standard oil to be used in this engine and is identified specifically on the engine oil fill cap.



How often do you change oil on a 6.7 diesel?


every 10,000 miles
The 6.7 Powerstroke typically requires an oil change every 10,000 miles for models manufactured between 2011 and 2022. For those built in 2023 and later, the interval can extend up to 15,000 miles before service is necessary.



What kind of oil does a Dodge 2500 diesel take?


Oil Grade: SEO39
12 quarts (with filter).



Can I use 15W40 instead of 10w30 in diesel engines?


Both 15W-40 and 10W-30 oils are multi-grade oils commonly used in diesel engines.



Is 5W-40 better than 15W-40?


The “W” stands for “winter.” So, for example, a 5W-40 engine oil and a 15W-40 engine oil will have the same high-temperature flow characteristics (40), but the 5W- will flow better and faster at lower temperatures than the 15W-.



Can I use 15W40 instead of 10w30?


In hot climates, where engines can reach high temperatures, 15W40 oil's superior high-temperature protection would be advantageous. Conversely, in cold climates, 10W-30 oil's improved cold-start performance would be beneficial.



How many gallons of oil does a 6.7 diesel take?


The 6.7 Powerstroke's oil capacity is 15 quarts if your Ford F-250 to F-600 was produced after 2022. Those from 2011 to 2022 should hold approximately 13 quarts. A Ford F-650 or an F-750 from 2015 to 2022 can hold up to 15 quarts, but 2023 models and later with a 6.7 Powerstroke have an oil capacity of 17 quarts.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.