How Much Oil Does A 6.7 Cummins Engine Take?

How Much Oil Does A 6.7 Cummins Take?

The oil capacity of the 6.7 Cummins engine depends on the model year. The engines manufactured after 2010 typically require 3 gallons, or 12 quarts, of oil. However, older 6.7 Cummins engines may have different oil capacities, with some needing more than 12 quarts and others requiring less.

The necessary oil amount for your 6.7 Cummins can also fluctuate according to your oil filter. If you don’t change the filter, the engine will need around 10 quarts of oil. Nevertheless, replacing the oil filter when adding or flushing your engine oil is recommended to maintain cleanliness and improve the engine’s lifespan.

6.7 Cummins engine

Although the specified capacity for the post-2010 engine model is 12 quarts. However, your specific vehicle model might require slightly lower than the full amount. Avoid overfilling the engine to reach the 12-quart capacity, as excessive oil can lead to increased pressure and wear on the oil pump and other engine components.

While selecting oil for your 6.7 Cummins engine, it’s essential to consider both the type and quantity of oil. Choose the ideal oil for your engine to optimize your truck’s performance.

How Often Should I Change 6.7 Cummins Oil?

To minimize oil dilution and sludge accumulation in your 6.7 Cummins engine, it’s crucial to change the oil according to the manufacturer’s recommendation. These intervals can differ based on your driving habits, driving conditions, and the model year.

6.7 Cummins

For 6.7 Cummins engines manufactured from 2007.5 to 2012, it’s recommended to change the oil every 6 months or 7,500 miles.

For 6.7 Cummins engines produced after 2013, the suggested interval is every 500 hours of use, six months, or 15,000 miles, whichever occurs first.

In general, if you frequently drive the truck for long durations without stopping (i.e., on highways), you may be able to go longer between oil changes. However, if your typical driving involves city traffic or frequent starts and stops, it’s advisable to change your oil more frequently.

Warning Signs of Low Oil in 6.7 Cummins

  • Poor engine power
  • Engine overheating
  • Burning oil smell
  • Poor vehicle acceleration
  • Strange noises

How Much Oil Does A 6.7 Cummins Take?

For heavy-duty Dodge Ram from 2010 onwards, the oil capacity is 12 quarts when you replace the filter according to recommendations. If you don’t replace the filter, the capacity becomes 10 quarts.

However, many DIY oil changers have noted that 11 quarts of oil to is enough oil without overfilling the engine. But the truck models with a 6.7 Cummins engine produced before 2010, the oil capacity may vary.

Read More: Bad Fuel Rail Pressure Sensor Symptoms and Causes

What Type of Oil Goes in A Cummins Engine?

When you are changing the engine oil, it’s essential to use the appropriate oil for your engine. The best suitable engine oil for a .7 Cummins engine varies according to the engine model.

Synthetic oil is preferable over conventional oil for all models. This oil contains a higher flash point and has additives that enhance flow, reducing wear and friction between the engine parts.

While full-synthetic oils may cost more initially, they last longer and contribute to increased engine longevity, preventing severe damage.

The best suitable viscosity grade depends on the model and the climate in which you drive.

In actuality, viscosity grade represents the temperature range in which the oil performs effectively. Select a viscosity grade according to the ambient temperature in your area.

  • Model years 2007.5 to 2018: Opt for a synthetic 15W40 while driving your vehicle in conditions where the temperature is above zero degrees Fahrenheit. You should always put synthetic 5W-40 oil in your engine if you want to drive in all temperatures.
  • Model years 2019 and later: Select a synthetic 10W30 oil if you want to drive in temperatures above 0 degrees Fahrenheit.

How To Change Oil on A 6.7 Cummins?

Follow the following steps to change the oil on your 6.7 Cummins:

  • Park your vehicle on a leveled surface.
  • Position your oil pan beneath the oil pan’s drain plug.
  • Unscrew the drain plug to allow the old oil to flow out of the engine.
  • Loosen the oil fill cap to facilitate easier oil drainage.
  • Once the oil ceases to flow (typically within 30-45 minutes), clean the drain plug and reattach it securely.
  • Remove the old oil filter (accessible through the passenger side wheel well) and dispose of it. The filter will be affixed with a screw.
  • Install the new oil filter by hand-tightening the screw.
  • Utilize a funnel to pour the fresh oil into the engine.
  • To verify the oil level, start the engine, let it run for several minutes, and then use the dipstick to confirm the appropriate oil level.

FAQ Section

Why Do Engines Need Oil?

Oil plays a crucial role in lubricating the engine, ensuring that parts can move together without making metal-to-metal contact. While an engine without oil may still operate, it would rapidly deteriorate due to friction damaging essential components. Thus, it is critical to ensure that your engine has sufficient oil and the correct type of oil to run efficiently.

What weight oil should I use in a 6.7 Cummins engine?

Cummins precisely endorses two Valvoline oils for its engines. The 15W40 oil is suitable for temperatures above zero degrees Fahrenheit, whereas the 5W40 oil is designed for very cold temperatures.

What is the capacity of the 6.7 Cummins transmission fluid?

150,000 mi./240 000 km, 120 Months or 22.0 QTS.

How many gallons of oil does a 6.7 take?

For normal usage, the manufacturer recommends 10W30 oil, and for severe conditions, 5W40 oil is suggested. When using biodiesel fuel blends (up to B20), it is recommended to use either 15W40 or 5W40 oil.

What is the best oil to run in Cummins?

Valvoline’s Premium Blue Engine Oil has the endorsement of Cummins and has undergone extensive testing in stationary and EGR on-road engines. This includes engines powered by LNG, CNG, and diesel, as well as engines equipped with Diesel Particulate Filters (DPFs).

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