What kind of oil does a 3.0 EcoDiesel take?

The 3.0 EcoDiesel typically requires a full-synthetic 5W-40 engine oil that meets API CJ-4 or CK-4 and ACEA C3 specifications, with low SAPS to protect the exhaust aftertreatment system.

The 3.0 EcoDiesel, a VM Motori-designed V6 used in vehicles like the Ram 1500 and Jeep Grand Cherokee, has oil requirements that can vary by model year and market. Always consult the vehicle’s owner's manual or a dealership to confirm the exact specification for your specific year and region.

Core oil specifications

Before listing the technical specs, note that the following guidelines cover the most common requirements across 3.0 EcoDiesel applications.

• Viscosity: 5W-40 is the standard recommendation for most climates and loads.


• Oil type: Full-synthetic motor oil.


• Specifications: API CJ-4 or CK-4; ACEA C3; low SAPS (sulphated ash, phosphorus, and sulfur) to protect the diesel particulate filter.


• Market notes: Some regions may specify CK-4 in addition to CJ-4; always verify the exact spec listed in your manual.

Conclusion: Use a 5W-40 full-synthetic oil that meets CJ-4/CK-4 and ACEA C3 with low SAPS to ensure proper lubrication and emissions-system protection.

Year-by-year and climate considerations

Model-year notes

Oil specs have remained largely consistent, but occasional updates can occur via service bulletins. Verify the exact specification printed in your owner's manual for your year and model.

• Early to mid-generation models often specify CJ-4 with ACEA C3; some later versions list CK-4 compatibility as well.


• Always confirm the precise specification from the manual or dealer for your exact year and configuration.

Conclusion: For any given vehicle, the manual is the definitive source for the correct CJ-4/CK-4 and ACEA C3 specification.

Climate and usage considerations

Driving conditions and climate can influence viscosity choices and maintenance intervals.

• Climate: 5W-40 remains suitable across a broad temperature range, including cold starts and hot climates.


• Usage: Heavy towing, high-load driving, or sustained high speeds may benefit from the same 5W-40 grade due to its robust protection.


• Change intervals: With full synthetic 5W-40, drain intervals are commonly around 10,000 miles (16,000 km) under normal service; severe service may require shorter intervals per the manual.

Conclusion: In most cases, stick with a 5W-40 full-synthetic oil meeting CJ-4/CK-4 and ACEA C3, and follow your vehicle’s recommended change intervals based on climate and use.

Summary

The 3.0 EcoDiesel’s oil needs are largely defined by a 5W-40, full-synthetic oil that meets API CJ-4 or CK-4 and ACEA C3 specifications, with low SAPS to protect the diesel particulate filter. Always verify the exact requirements for your year and market in the owner's manual or with a dealer, and adhere to the recommended oil-change intervals to maintain performance and warranty eligibility.

What oil is recommended for the 3.0 Duramax diesel?

The recommended oil for a 3.0L Duramax is 0W-20 full synthetic oil that meets the GM DexosD specification. This is required for optimal performance, fuel efficiency, and to maintain the vehicle's warranty. You will need 7 quarts for a full oil change. 
Key oil specifications

• Viscosity: 0W-20
• Type: Full synthetic
• Specification: GM DexosD certified
• Capacity: 7 quarts 

Recommended brands

• ACDelco DexosD: This is the factory-recommended brand. 
• Mobil 1 Dexos D: A certified and recommended alternative. 
• Amsoil 0W-20 diesel oil: Available, though it may not have the official DexosD certification on the label. 

Important considerations

• Warranty: Using an oil that is not DexosD certified can void your powertrain warranty. 
• Certification: Ensure any oil you use has the "DexosD" certification on the label, not just the words. 
• Engine design: The engine is designed with tight clearances that are compatible with the 0W-20 viscosity. 

What is the best oil for a 3.0 EcoDiesel?

The best oil for a 3.0L EcoDiesel is a 5W-40 full synthetic diesel engine oil that meets the specific engine requirements for your vehicle's generation. For newer generations (2020+), the oil must meet FCA Material Standard MS-12991. Older models may require an oil that meets Chrysler MS-11106. Popular choices include Mopar, Pennzoil Platinum Euro, Shell Rotella T6, and other full synthetic 5W-40 oils that meet the correct specifications.
 
Key specifications to look for

• Weight: 5W−405 cap W minus 405𝑊−40 full synthetic
• Specifications:
  • 2020+: FCA Material Standard MS-12991
  • 2014-2019: Chrysler Material Standard MS-11106
• API Category: API SN or SN+ for newer engines 

Recommended oil brands

• Mopar: Part numbers like 05166241PA, 05166241GA, or 68231021AA 
• Pennzoil: Pennzoil Platinum Euro 5W-40 is a frequently recommended option 
• Shell: Rotella T6 5W-40 is a popular heavy-duty diesel oil 
• Other brands: Look for other brands that specifically state they meet the required Chrysler/FCA specifications, such as Motul, Red Line, or Valvoline 5W-40 

Important considerations

• Vehicle generation: Always check your vehicle's owner's manual for the correct specification, as requirements changed between generations. 
• Filter: Use the correct oil filter. The updated Mopar filter is recommended for many models, especially newer ones. 
• Change schedule: Adhere to the recommended oil change intervals, which are generally longer for full synthetic oil but depend on driving conditions. 

What kind of oil does a 2016 RAM 1500 3.0 EcoDiesel take?

The correct oil for a 2016 Ram 1500 3.0 diesel is a full synthetic 5W-40 engine oil. It must meet specific standards, including API CJ-4 (or CK-4) and FCA (Fiat Chrysler Automobiles) MS-10902, or Cummins CES 20081. The engine requires approximately 10.6 quarts of oil.
 
Oil specifications

• Viscosity: 5W-40
• Type: Full synthetic
• Standards: API CJ-4 (or CK-4), FCA MS-10902, or Cummins CES 20081
• Capacity: 10.6 quarts (with filter)
• Other: The oil should be low ash to protect the after-treatment system. 

Important notes

• Updated recommendation: Many 2016 models were originally spec'd for 5W-30, but a service bulletin later updated the recommendation to 5W-40 full synthetic for all 2014-2019 EcoDiesel engines. It is critical to use 5W-40 for these vehicles. 
• Oil filter: Ensure you use the correct oil filter and replace the O-ring on the filter housing. 
• Oil change interval: The recommended oil change interval is 10,000 miles or one year, but this can vary based on driving conditions. The vehicle's on-board computer will also provide alerts. 

How much oil does a 3.0 Dodge diesel take?

The oil capacity for a Ram 3.0L diesel varies by model year, with a range of 10.5 to 10.6 quarts for earlier generations (4th gen) and 8.5 quarts for later models (3rd gen and 2020-2023). It is essential to consult your owner's manual for the exact capacity and the correct oil type, as specifications can differ significantly between generations. 
Oil capacity by model generation

• 10.5 to 10.6 quarts: For the 4th generation (2014-2019), the capacity is approximately 10.5 to 10.6 quarts. 
• 8.5 quarts: For 3rd generation models (2020-2023), the capacity is 8.5 quarts. 

Important considerations

• Check your manual: Always verify the correct oil capacity and type in your specific owner's manual, as capacities can vary by year. 
• After refill, check the level: After refilling, start the engine to allow the oil to circulate, then shut it off and check the dipstick to ensure the level is correct. Add oil as needed. 
• Oil type: The correct oil type can also change based on the model year. For example, some models require a 5W-40 full synthetic, while others may specify a different type like 5W-30.