If you have Dodge Ram with a 6.7 liter Cummins engine, you’ve got a big time truck with lots of HP, tons of torque, and great towing capacity.
Now, just like with any other vehicle out there, no matter how good the engine is, it is going to require service and maintenance on a regular basis, not to mention the right engine oil too.
If you’ve got a 6.7 Cummins engine powering that beautiful truck, the right engine oil is going to make all the difference. The best oil for Cummins 6.7 will help keep that engine running smoothly, prevent buildups, maximize efficiency, and so much more.
That said, there are so many types of oil out there, that finding the best oil for Cummins 6.7 can be very difficult. This is what we are here to help you with right here and now, so let’s get to it.
Click here to skip to our recommended pick!
- Great for emissions treated engines
- Official recommendation from Cummins
- Advanced deposit control
- Great fuel economy
- Works for many diesel vehicles
- Excellent engine protection
- Works for many mileages
- Reductions of deposits
- Increased engine protection
- Excellent all weather performance
- Improved fuel economy
- Cummins recommendations for engines operating over 0 degrees
- Excellent warm weather functionality
- For all heavy duty diesel engines
- Great for protecting against buildups
- Excellent wear protection
- High temperature stability
- No need to clean diesel particulate filters
Our Overall #1 Rated Pick
Valvoline Premium Blue SAE 15W-40 Engine Oil
Valvoline Premium Blue SAE 15W-40 Engine Oil is made with special dispersive polymer technology to provide advanced soot control for minimal buildups. Moreover, this stuff is also made to provide excellent cold start performance.
This oil also features a higher temperature deposit control, and while it is not the best for extremely low temperatures, it does work well for very high temperatures. With Higher TBN level and TBN retention, long-life performance is what this engine oil is all about. It’s the recommended option and can be used for both lower and higher mileage diesel Cummins 6.7 liter engines.
Pros:
- Great for emissions treated engines
- Official recommendation from Cummins
- Advanced deposit control
- Great for high temperatures
- Advanced cold start performance
- Lower and higher mileage diesel engines
Cummins 6.7 Oil Recommended by Manufacturer
If you want to find the best motor oil for Cummins 6.7 engines, the best place to find this information is in the owner’s manual, so this is exactly where we checked. According to the owner’s manual for the Cummins 6.7 engine, there are a couple of different options which you can explore, and it all depends on the make and model of your truck, as well as how high the mileage is too.
Cummins 6.7 Liter – 2007 to 2018
For slightly older Dodge Ram trucks that were made between 2007 and 2018, the official recommendation from the manufacturer is to use either SAE 15W-40 engine oil or SAE 5W-40 Engine oil. The official recommendation from Cummins is to use Valvoline Premium Blue 8600 ES SAE 15W-40 Engine Oil for temperatures over 0 Fahrenheit and can be used for lower and higher mileage engines.
Cummins 6.7 Liter – 2019
Now, for the newest of Dodge Ram trucks, the recommended oil for Cummins diesel engines, for the 2019 model, is either SAE 10W-30 engine oil or Valvoline Premium Blue SAE 5W-40 engine oil. The recommendation here is to go with the Valvoline brand name, although this could include others as well.
Wrap Up
Seeing as there are so many different recommendations for the various models, we aren’t going to cover the pros and cons of each oil right now, as there is simply too much to cover (we will do this in the review section of each specific oil). However, something you do need to keep in mind is the viscosity rating of the oil, perhaps the most important consideration of all.
Remember that the first digit, the number before the “W”, designates how cold the oil can get before it starts to thicken too much, and the number after the “W” designates the other end of the spectrum, the maximum temperature.
5W-40 vs 15W-40 for 6.7 Cummins
One of the most important things that you need to know about 6.7 Cummins synthetic oil is that the different viscosity ratings provide various levels of performance, specifically in relation to temperature.
As stated by the manufacturer, Cummins, Valvoline Premium Blue SAE 15W-40 Engine Oil is designed to be used with engines that operate over 0 degrees Fahrenheit, whereas Valvoline Premium Blue SAE 5W-40 Engine Oil is designed to be used with engines under 0 degrees Fahrenheit.
As you can see, the viscosity rating makes a difference, and here particularly, it’s the first digit you need to keep an eye on. 5W is lower than 15W, and is therefore designed to work better with colder conditions, whereas the 15W is better in warmer conditions.
On a side, note, Cummins also states that 10W-30 Engine oil can be used for their Cummins 6.7 engines, but this is only for the newer 2019 models, such as the 2019 Dodge Ram. This oil performs very well in moderate temperatures.
| Type of Oil | Summary |
|---|---|
| SAE 5W-40 | These oils work best for diesel engines operating at over 0 degrees Fahrenheit |
| SAE 15W-40 | These oils work best for diesel engines operating at under 0 degrees Fahrenheit |
| SAE 10W-30 | These oils can be used for the newer Cummins 6.7 2019 Dodge Ram |
Best Synthetic Oil for Cummins 6.7
Here we have a selection of the best oil for Cummins diesel engines, as well as short descriptions of each. Today we are going to take a look at the various products and oil types recommended by the manufacturer, as well as some other top picks of the best oil for Cummins too.
The top best product [hide]
Valvoline Premium Blue SAE 15W-40 Engine Oil
Shell Rotella Full Synthetic 5W-40 Diesel Engine Oil
Shell Rotella T4 Triple Protection Conventional 10W-30 Diesel Engine Oil
Valvoline Premium Blue Extreme SAE 5W-40 Full Synthetic Engine Oil
Amsoil SAE 15W-40 Heavy-Duty Diesel and Marine Motor Oil
Triax Fleet Supreme ESP 10W-30 Ultimate Full Synthetic Engine Oil
Cummins 6.7 Oil Type By Year
Although older models of the 6.7 Cummins engine are all fairly similar, there may be some differences which you should be aware of. So let’s take a look at some oil facts about these engines based on their year of manufacture.
2019 6.7 Cummins Oil Type
The recommended oil type for this engine is SAE 10W-30 or SAE 5W-40 full synthetic. The oil capacity of this engine is 12 US quarts. The 2019 Cummins diesel engine features 400 hp @ 2,800 rpm with 1,000 lb-ft of torque @1,800 rpm.
2018 6.7 Cummings Oil Type
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. The 2018 Cummins diesel engine features 385 hp @ 2,800 rpm with 930 lb-ft of torque @1,700 rpm.
2017 6.7 Cummings Oil Type
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. The 2017 Cummins diesel engine features 385 hp @ 2,800 rpm with 900 lb-ft of torque @1,700 rpm.
2014 6.7 Cummings Oil Type
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. The 2014 Cummins diesel engine features 385 hp @ 2,800 rpm with 850 lb-ft of torque @ 1,700 rpm.
FAQ
Which Engine Oil is Best for Dodge Ram Cummins 6.7?
Valvoline Premium Blue Extreme SAE 5W-40 Full Synthetic Engine Oil
Valvoline Premium Blue SAE 15W-40 Engine Oil
Triax Fleet Supreme ESP 10W-30 Ultimate Full Synthetic Engine Oil
What Type of Oil does A 6.7 Cummins Take?
Depending on the year, this engine may take 5W-40, 15W-40, or 10W-30 Engine Oil.
How Much is Cummins 6.7 Oil?
You are looking at spending between $60 and $80 for average Cummins 6.7 engine oil.
How Much Oil does a 6.7 Cummins take?
The oil capacity of this engine is 12 US quarts.
Conclusion
The bottom line is that the right engine oil for your 6.7 Cummins can make all of the difference. Take a look at the recommendations, compare these to your own vehicle, and then go from there. The best engine oil for 6.7 Cummins will keep that engine purring smoothly for miles to come.
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