2018 Ram 2500 6.4 oil capacity and type are critical details for any owner looking to maintain their heavy-duty truck effectively. Understanding these specifications is paramount for ensuring the longevity, performance, and reliability of your powerful 6.4L HEMI V8 engine. Neglecting proper oil maintenance can lead to reduced engine life, decreased fuel efficiency, and potentially expensive repairs down the road. This article will delve into the specifics, offering clear guidance on what your 2018 Ram 2500 requires to keep it running smoothly, whether you’re tackling tough jobs or cruising the highway.
The Heart of the Beast: The 6.4L HEMI Engine
The 2018 Ram 2500, especially when equipped with the 6.4-liter HEMI V8 engine, is built for serious work. This engine delivers impressive horsepower and torque, making it a favorite for towing, hauling, and demanding everyday tasks. Such a robust powertrain relies heavily on its lubrication system to protect its intricate components from friction and heat. The engine oil acts as the lifeblood, providing lubrication, cooling, cleaning, sealing, and corrosion protection. Using the correct type and amount of oil is not just a recommendation; it’s a fundamental requirement for optimal engine health and performance.
Why Proper Engine Oil Matters So Much
Engine oil does far more than just lubricate moving parts. Here’s a quick breakdown of its vital roles:
Lubrication: It creates a thin film between metal surfaces, preventing direct metal-on-metal contact and reducing wear.
Cooling: Oil circulates through the engine, absorbing heat from critical components and carrying it away to be dissipated.
Cleaning: It picks up contaminants like dirt, carbon deposits, and sludge, keeping the engine clean internally. These contaminants are then trapped by the oil filter.
Sealing: Oil helps to seal the gap between the piston rings and cylinder walls, ensuring maximum combustion pressure and power.
Corrosion Protection: Additives in the oil protect internal metal components from rust and corrosion, which can occur due to moisture and combustion byproducts.
Using the wrong oil type can compromise these functions, leading to accelerated wear, sludge buildup, reduced fuel economy, and potentially catastrophic engine failure. Similarly, an incorrect oil level (either too low or too high) can also cause significant damage.
Getting the Specifics: 2018 Ram 2500 6.4 Oil Capacity and Type
When it comes to servicing your 2018 Ram 2500 with the 6.4L HEMI, precision is key.
Oil Capacity
For the 2018 Ram 2500 equipped with the 6.4L HEMI V8 engine, the engine oil capacity is 7 quarts (6.6 liters). This capacity generally includes the volume held within a new oil filter. It’s crucial to always replace the oil filter during every oil change. After filling, always check the oil level using the dipstick to ensure it’s within the recommended range. Start the engine briefly to circulate the oil, then shut it off, wait a few minutes for the oil to settle, and check the dipstick again. Add small amounts if necessary, being careful not to overfill.
Recommended Oil Type and Viscosity
The manufacturer-recommended engine oil for your 2018 Ram 2500 6.4L HEMI is SAE 0W-20 or 5W-20 full synthetic engine oil.
Beyond the viscosity grade (0W-20 or 5W-20), it’s imperative that the oil also meets specific performance standards set by Chrysler/FCA. The most critical specification to look for is Chrysler Material Standard MS-6395. This ensures the oil has the necessary properties and additives to protect your HEMI engine effectively.
Viscosity (0W-20 or 5W-20):
The “W” stands for “winter,” and the number before it (0 or 5) indicates the oil’s viscosity at cold temperatures. A lower number means better flow when cold, which is beneficial for engine startup and lubrication in colder climates.
The second number (20) indicates the oil’s viscosity at operating temperature. This number is crucial for maintaining proper lubrication under normal driving conditions.
Full Synthetic: Modern engines like the 6.4L HEMI are designed to benefit significantly from full synthetic oils. These oils offer superior protection against wear, better resistance to thermal breakdown, and improved flow at low temperatures compared to conventional or synthetic blend oils. They contribute to longer engine life and can handle the strenuous demands placed on a heavy-duty truck.
API Certification: Look for the latest API (American Petroleum Institute) certification, typically “API SN” or “API SP,” on the oil container. This indicates the oil meets current industry performance standards for gasoline engines.
Choosing the Right Oil Filter
Just as important as the oil itself is the oil filter. A high-quality oil filter removes contaminants from the oil, preventing them from circulating through the engine and causing damage. For your 2018 Ram 2500 6.4L HEMI, it’s recommended to use a Mopar oil filter or a reputable aftermarket equivalent that meets OEM specifications. These filters are designed to handle the flow rates and filtration requirements specific to your engine.
Oil Change Intervals
Ram’s recommended oil change interval for the 2018 Ram 2500 6.4L HEMI is generally 10,000 miles (16,000 km) or 12 months, whichever comes first, or when indicated by the vehicle’s Oil Change Indicator System.
However, these intervals can vary based on driving conditions. If you frequently:
Tow heavy loads
Drive in dusty conditions
Operate in extreme temperatures (very hot or very cold)
Perform extensive idling or short trips
You might need to change your oil more frequently. Always refer to your owner’s manual for specific guidelines and consider following the vehicle’s onboard oil life monitor, which calculates the optimal change interval based on your driving habits.
A Quick Note on DIY vs. Professional Service
Changing your own oil can be a rewarding and cost-saving task. However, if you’re uncomfortable performing the service, or if you prefer the convenience, taking your Ram to a certified dealership or a trusted independent mechanic ensures the job is done correctly with the right parts and fluids. Regardless of who performs the service, always confirm that the correct oil type (0W-20/5W-20 full synthetic, MS-6395 compliant) and capacity are used.
In conclusion, understanding the 2018 Ram 2500 6.4 oil capacity and type is foundational to proper vehicle maintenance. By adhering to the recommended 7-quart capacity and using the specified SAE 0W-20 or 5W-20 full synthetic oil that meets the Chrysler MS-6395 standard, along with a quality oil filter, you’ll ensure your robust 6.4L HEMI engine delivers peak performance and remains reliable for years to come. Regular oil changes according to the manufacturer’s guidelines are a small investment that yields significant returns in engine longevity and overall truck health.
—
Source:
2018 Ram 2500 Owner’s Manual and Service Information