8 The Best Oil for 6.7 Cummins

Engine oil is considered the blood or life fluid of every engine. With that in mind, every driver endeavors to use the best and recommend engine oil for their vehicles.

Cummins engines are high-performing and reliable engines that boost driver’s confidence and satisfaction.

However, to get the most out of them, you’ll need to lubricate them adequately. So let’s consider some quality oils for these engine types.

The best oil for the 6.7 Cummins is the Valvoline Premium Blue Extreme SAE, as the Cummins company directly endorses it. However, that does not entirely rule out other diesel engine oil for the 6.7 Cummins. 

BEST 8 DIESEL ENGINE OIL FOR YOUR 6.7 CUMMINS

Below is a list of the eight best oils for your 6.7 Cummins engine.

#1. Valvoline Premium Blue Extreme SAE

Description:

The Valvoline Premium Blue diesel engine oil with a viscosity of 5W-40 is arguably the best Cummins oil as it is the recommended Cummins diesel oil endorsed by Cummins.

Specs:

The  Valvoline Premium Blue has impressive oxidation resistance, outstanding wear protection, and superior deposit performance and is formulated especially for big trucks and heavy trucks.

You can check the latest price and availability of the Valvoline Premium Blue Extreme SAE online. You can buy it at automobile stores for about $84.66.

#2. Cummins Onan 15W40 Oil

Description:

Packaged in a 32 oz bottle, this diesel engine oil is a non-synthetic engine oil designed to reduce diesel consumption in engines that run at higher temperatures caused by increased oil oxidation and viscosity.

Specs:

This diesel engine oil is the best Cummins engine and is suitable for extreme weather conditions.

So you do not need to worry about your engine having a hard time pumping it during cold weather or your engine consuming a lot of oil when it is hot. 

It is also very compatible with other oils, so you don’t need to worry about its reaction with your existing oil.

You can check the latest price and availability of the Cummins Onan 15W40 Oil at online stores. In addition, you can buy it at automobile stores for about $42.00.

#3. Quaker State 10W40 Protective Oil

Description:

Packaged in a 5-gallon container, the quaker state 10w40 protective oil provides adequate protection against wear and tear for your engine.

Specs:

It is perfect for high-speed driving as well as stop-and-go driving. It does not thin out and maintains its required viscosity throughout its use.

In addition, it fights engine sludge and deposits free, thereby protecting your engine from rust due to harmful acids generated by engine contaminants.

You can check the latest price and availability of the Quaker state 10W40 protective oil at online stores. You can buy it at automobile stores for about $23.99

#4. Mobil 1 Turbo Diesel Engine Oil

Description:

Packaged in single gallons, the Turbo Diesel Engine Oil is a full Synthetic Heavy-Duty Diesel Oil with a viscosity of 5W-40 that you can use for mixed fleet operations.

Specs:

This diesel engine oil gives you better performance over regular diesel engine oil.

It improves engine life while providing both long drain capability and less fuel usage benefits for modern diesel engines operating under severe conditions.

It also controls sludge build-up and is perfect for the recent low-emission engine designs with Exhaust Gas Recirculation (EGR).

You can check the latest price and availability of the Mobil 1 Turbo Diesel Truck Oil online. You can buy it at automobile stores for about $54.97.

#5. Shell Rotella T6 Full Synthetic 5W-40 Diesel Motor Oil

Description:

Packaged in a single gallon, this diesel engine oil is a fully synthetic motor oil made with synthetic base oils and advanced additives.

Specs:

It has a special Triple Protection Plus technology, designed to offer advanced engine protection, long oil life, and all-temperature protection, thereby reducing the cost of maintenance.

You can check the latest price and availability of the Shell Rotella Full Synthetic Oil in online stores. You can buy it at automobile stores for about $26.00

#6. Castrol 06249 EDGE

Description:

Packaged in a 1 Quart – 6 Pack bottle, this diesel engine oil is a fully synthetic motor oil that improves your engine’s oil film strength by 30% and reduces friction from power-robbing. 

Specs:

It contains the Advanced Castrol Proprietary technology that gives the highest level of protection for critical engine parts against wear and tear and also saves fuel with powerful dispersant molecules that stop particle build-up, which leads to sludge.

You can check the latest price and availability of the Castrol 06249 EDGE on online stores. In addition, you can buy it at automobile stores for about $31.95.

#7. Motul 007250 8100 X-cess

Description: 

This diesel engine oil is a full synthetic oil specifically designed for powerful and new models of vehicles, naturally aspirated or turbocharged, indirect or direct injection, and compatible with catalytic converters (CAT).

Specs:

It comprises high-quality ingredients with better aerodynamic performance than traditional motor oils. It also offers protection against soot and saves fuel.

You can check the latest price and availability of the  Motul 007250 8100 X-cess on online stores. You can buy it at automobile stores for about $48.84.

#8. Delo 39146 400 XSP SAE

Description:

This diesel engine oil with viscosity is also a mixed-fleet engine oil.

Perfect for regular cold engine starts in diesel engines operating in extremely cold temperatures.

Specs:

It contains a deforming additive that prevents air entrapment. It also reduces valve and piston crown land residue, which reduces fuel consumption.

In addition, its high level of ashless dispersants keeps fuel soot floating and prevents filter plugging, abrasive wear, cylinder head sludge, viscosity increase, and oil clotting.

You can check the latest price and availability of the Delo 39146 400 XSP SAE on online stores.

In addition, you can buy it at automobile stores for about $23.99.

Can I use Any Oil for My Cummins Engine?

All engines have a specific type of engine oil formulated to suit their unique mechanism.

Therefore, to avoid any possible damage, it is best to stick to the recommended engine oil for your specific Cummins engine.

A wrong choice of diesel engine oil for your Cummins engine could result in serious consequences like:

• Loss of engine power
• A noisy Engine
• A complete breakdown

That is because the diesel engine oil is responsible for lubricating to keep moving parts protected against wear and tear, cooling, and removing debris like metal finings, all to prolong engine life.

However, there are two common classes of oils in general. These are;

#1. Full Synthetic Oil:

These are engine oils formulated for high-tech engines used for heavy-duty.

They flow better at low temperatures and maintain optimum viscosity at high temperatures but are an expensive choice

#2. Synthetic Blend Oil:

These are a mixture of synthetic oil and organic oil made to protect relatively heavier engine loads with higher temperatures.

It simply means they’re less volatile and less expensive.

While both are great, I’ll advise that you check your vehicle’s manual for its required engine oil specs.

 It would be best to consider these factors before choosing a diesel engine oil.

• Viscosity grade
• Climate conditions
• Driving conditions

Conclusion

Overall, check your vehicle’s manual to be sure of its diesel engine oil requirements.

Doing this will help you choose an engine oil with the required specs.

And for better engine maintenance, get an engine oil filter to keep your engine oil clean and a water separator set to screen out rust and dust and keep your engine running smoothly.