If you’ve recently upgraded your vehicle to one with a 6.7 Cummins engine, you may be wondering how much oil it requires. Let’s explore the oil capacity of a 6.7 Cummins engine and other important details you should know.
If your engine is a post-2010 model, then your 6.7 Cummins engine takes 12 quarts of oil. However, if you’re planning on changing the oil yourself, older 6.7 Cummins engines may require less than 12 quarts of oil. Some popular trucks with a 6.7 Cummins engine include the heavy-duty truck models Dodge Ram 3500 and Dodge Ram 2500.
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How Often Should You Replace Oil in a Cummins Engine?
The 6.7 Cummins is a diesel engine that doesn’t require frequent oil changes. On average, the oil in a 6.7 Cummins engine should be replaced every 15,000 miles or six months. It’s always a good idea to regularly check the oil level in your truck to ensure it remains at an optimal level. Unfortunately, oil leaks are a common problem with the 6.7 Cummins engine, and low oil pressure can lead to costly engine repairs. Keep an eye out for warning signs such as a low oil warning on the dashboard, rough engine performance, or a low oil level on the dipstick.
How Much Oil Does a 6.7 Cummins Take?
For heavy-duty Dodge Rams from 2010 or later, the oil capacity is 12 quarts when you do a filter change. If you’re not changing the oil filter, then the capacity is only 10 quarts. However, many people who change their own oil note that 11 quarts seems to be the maximum without overfilling it. For trucks with a 6.7 Cummins engine manufactured before 2010, the oil capacity may vary.
What Is the Capacity in Gallons?
If you prefer to think of engine oil in terms of gallons instead of quarts, you’ll be pleased to know that the equivalent of 12 quarts of oil is just over 3 gallons. So, for trucks with a 6.7 Cummins engine, the oil capacity is just over 3 gallons.
What Type of Oil Goes in a Cummins Engine?
When it comes to oil changes for a 6.7 Cummins engine, it’s important to use the right oil. The official recommendation is synthetic 5W-40 oil for driving in below zero-degree Fahrenheit conditions and synthetic 15W-40 oil for driving in temperatures above zero degrees Fahrenheit, according to Cummins. Some suggested oils include Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil and Shell Rotella T5 Synthetic Blend 15W-40 Diesel Engine Oil.
How to Change Oil on a 6.7 Cummins?
If you’re interested in changing the oil on your 6.7 Cummins engine yourself, here are some basic steps to follow:
- Place a drain pan under the oil pan’s drain plug.
- Remove the drain plug and let the old oil drain out.
- Loosen the oil fill cap to aid in the drainage process.
- Once the oil stops flowing, clean and securely reattach the drain plug.
- Remove the old oil filter, located through the passenger side wheel well, and discard it.
- Install the new oil filter and tighten the screw by hand.
- Using a funnel, pour in the new oil.
- Finally, check the oil level by starting the engine, running it for a few minutes, and using the dipstick to confirm the oil level.
Please note that if this is your first time changing the oil on a 6.7 Cummins engine, it’s best to seek professional assistance or consult the vehicle’s manual. Additionally, you can watch the video below for visual instructions on how to change the oil in your Cummins engine.
Final Word
In conclusion, a 6.7 Cummins engine takes 12 quarts of oil, although many DIY oil-changers find that 11 quarts is the maximum amount without overfilling it. It’s important to replace the oil in your Cummins engine every 15,000 miles or six months, whichever comes first. Remember, changing the oil filter along with the oil is best for the overall health and longevity of your engine. If you’re confident in your ability to do the oil change yourself, follow the steps outlined above.
