2014 Ram 2500 6.7L Diesel Oil Guide: Capacity, Viscosity & Filters

AMSOIL diesel oil guide for 2014 Ram 2500 Pickup
AMSOIL diesel oil guide for trucks, vans, SUVs and diesel engines

What oil does a 2014 Ram 2500 6.7L Diesel take?

The 2014 Ram 2500 with the 6.7L 6-cylinder diesel engine (Engine Code L) requires an oil capacity of 12 quarts with a filter change. The recommended viscosity is 15W-40 for temperatures above -18°C, or 5W-40 synthetic oil for ambient temperatures below -18°C (0°F). AMSOIL recommends using high-quality diesel engine oils such as the Signature Series 5W-40 Max-Duty Diesel Oil.

AMSOIL product recommendations

Based on the AMSOIL lookup for your 2014 Ram 2500, here are the recommended fluids and filters to maintain engine performance and longevity.

Engine Oil Recommendations

Product Name Viscosity Part Code
AMSOIL Signature Series 5W-40 100% Synthetic Max-Duty Diesel Oil 5W-40 DEOQT-EA
AMSOIL 5W-40 Heavy-Duty 100% Synthetic Diesel Oil 5W-40 ADOQT-EA

Oil Filter Recommendations

Product Name Part Code
AMSOIL Oil Filter EAO80-EA
WIX XP Oil Filter 57620XP-EA
WIX Oil Filter 57620-EA

Air Filter Recommendations

Product Name Part Code
WIX Air Filter [1] 46930-EA
Donaldson P-Series Heavy Duty Air Filters P616743-EA

Coolant Recommendation

Product Name Part Code
AMSOIL Passenger Car & Light Truck Antifreeze & Coolant ANTPC1G-EA

Engine Oil Specifications & Details

Proper lubrication is critical for the Cummins 6.7L diesel engine to prevent premature wear and ensure compliance with emission standards.

Oil Viscosity Guide

Condition Recommended Viscosity
Above -18°C (0°F) 15W-40
Below -18°C (0°F) 5W-40 (Synthetic required)

Warning: Failure to use SAE 5W-40 synthetic engine oil in ambient temperatures below 0 F (-18 C) could result in severe engine damage.

Oil Capacity & Service Notes

  • Capacity: 12 quarts (with filter).
  • Service Procedure: After filling, start the engine and idle for several minutes. Check for leaks. Stop the engine. Wait 30 minutes to allow the oil to drain back into the pan and check the level again.
  • Oil Drain Plug Torque: 37 ft/lbs.
  • Required Specifications: Use API CJ/CK-4 oil that meets specification standards MS-10902. Oil meeting Cummins CES 20081 standards may also be used. Low ash diesel engine oil is required.

Diesel maintenance notes for this vehicle

Maintaining a heavy-duty diesel requires attention to filtration and fluid integrity. For the 2014 Ram 2500, ensure you are using low ash diesel engine oil as specified by the lookup notes to protect emission components.

  • Filtration: High-efficiency filters like the AMSOIL Oil Filter provide 99 percent filtering efficiency at 20 microns.
  • Air Intake: Clean air handling is vital for turbocharger longevity; consider premium media filters such as WIX or Donaldson P-Series to reduce engine wear.

Common diesel oil-related concerns and how AMSOIL products may help

Concern Why it matters AMSOIL Product How it may help Limitation
Extreme Temperatures Affects viscosity and cold starts Signature Series 5W-40 Excels in extreme temperatures Not confirmed from source data
Engine Wear Heavy duty cycles cause friction Signature Series Diesel Oil Delivers 6X more wear protection1 Based on Detroit Diesel DD13 testing
Contaminants Small particles damage components AMSOIL Oil Filter Greater capacity for small contaminants Not confirmed from source data

1 Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 5W-30 as worst-case representation.

Common maintenance concerns for this vehicle

Based on NHTSA data, owners of the 2014 Ram 2500 should be aware of several areas regarding steering and tailgate components:

  • Steering Linkage: There have been reports concerning the drag link connection and jam nut tightness.
  • Tailgate Functionality: Some models may experience issues with the tailgate actuator limiter tab.
  • Alignment: After suspension work, ensuring proper steering geometry is essential for safety.

Recall, TSB, and manufacturer communication notes

NHTSA recall research for the 2014 Ram 2500 indicates several active campaigns:

  • Steering Recall (Campaign 19V021000): The outboard steering linkage jam nut may loosen, potentially causing drag link separation and loss of steering control.
  • Aftermarket Suspension Recall (Campaign 18E096000): Certain AEV aftermarket suspension kits may have weakened connections at the steering knuckle.
  • Tailgate Recall (Campaign 19V347000): The tailgate actuator limiter tab may fracture, causing the tailgate to unlatch while driving.

Note: Always verify open recalls by using your specific VIN through official Chrysler/Ram channels or the NHTSA website.

About this vehicle

The 2014 Ram 2500 is a heavy-duty pickup truck designed for high-capacity tasks, offering significant payload and towing capabilities. This model year is part of the fourth-generation Ram Heavy Duty series, which sits above the light-duty Ram 1500 in terms of capability.

A defining feature of this vehicle is the 6.7L diesel engine associated with Cummins. The Cummins engine family is widely recognized for its durability in commercial and heavy-duty applications. Because these engines are often used for heavy towing, hauling, or industrial work, they place significant demands on the powertrain. Maintenance for this class of vehicle typically focuses on high-pressure fuel systems, air handling, filtration, and emission control components.

Owners should prioritize strict adherence to fluid change intervals to ensure engine longevity. While the 2014 model is a proven workhorse, maintaining its specialized diesel systems requires high-quality lubricants and filters designed for heavy-duty service. Note that specific technical details regarding exact horsepower or torque ratings should be verified through official service manuals.

Common questions about this vehicle’s diesel oil and maintenance

How much oil does my 6.7L Cummins take?

The 2014 Ram 2500 6.7L engine requires 12 quarts of oil when performing a service that includes a filter change.

What is the correct oil viscosity for winter driving?

For ambient temperatures below -18°C (0°F), AMSOIL recommends using SAE 5W-40 synthetic engine oil to prevent severe engine damage.

Does my Ram 2500 require low ash oil?

Yes, the AMSOIL lookup notes specify that low ash diesel engine oil is required for this application.

What torque spec should I use for the oil drain plug?

The oil drain plug should be torqued to 37 ft/lbs.

Can I use any diesel oil?

No, you should use an oil that meets API CJ/CK-4 standards and specification MS-10902. The AMSOIL lookup also notes that meeting Cummins CES 20081 standards is acceptable.

How can I check if my vehicle has an open recall?

You should contact a Chrysler dealer or visit the NHTSA website and provide your Vehicle Identification Number (VIN) to check for any active recalls, such as those related to steering or tailgates.


Disclaimer: This information is derived from provided source data. Always consult your vehicle’s owner manual or an authorized service provider to confirm specifications and maintenance requirements before performing any service.

Scroll to Top