The 2018 Ram 1500 5.7 oil capacity and type are crucial specifications for maintaining the longevity and optimal performance of this popular pickup truck. Understanding and adhering to these manufacturer recommendations ensures your 5.7L HEMI V8 engine operates efficiently, whether you’re commuting, towing, or tackling challenging terrain. Using the correct oil type and maintaining the appropriate level are fundamental to the health of your engine, impacting everything from fuel economy to the lifespan of critical components.
Why the Right Oil Matters for Your 5.7L HEMI
The 5.7-liter HEMI V8 engine, known for its robust power and torque, relies heavily on proper lubrication. This engine often incorporates advanced technologies like the Multi-Displacement System (MDS), which allows the engine to deactivate cylinders under light load for improved fuel efficiency. The precise operation of MDS, along with other internal engine components, is highly dependent on the correct oil viscosity and additive package.
Using the wrong oil can lead to a host of problems, including:
Reduced lubrication and increased wear on engine parts.
Decreased fuel efficiency.
Potential issues with the MDS system, leading to rough idling or engine lights.
Increased sludge buildup.
Overheating.
Premature engine failure.
Therefore, knowing the exact specifications for your 2018 Ram 1500 5.7L is not just a suggestion; it’s a critical part of responsible vehicle ownership.
Understanding the 2018 Ram 1500 5.7 Oil Capacity
For the 2018 Ram 1500 equipped with the 5.7-liter HEMI V8 engine, the oil capacity is specified at 7.0 quarts (6.6 liters). This measurement includes the oil filter, meaning when you perform an oil change, you should plan to use the full 7 quarts after replacing the old oil filter with a new one.
It’s always a good practice to add slightly less than the full amount initially (e.g., 6.5 quarts), then start the engine for a minute to circulate the oil, shut it off, wait a few minutes for the oil to settle, and then check the dipstick. Top up gradually until the oil level is between the “MIN” and “MAX” marks on the dipstick. Overfilling can be just as detrimental as underfilling, potentially causing aeration of the oil and damage to seals.
Recommended Oil Type for Your 2018 Ram 1500 5.7L
The manufacturer’s recommendation for the 2018 Ram 1500 5.7L HEMI engine is SAE 5W-20 engine oil. This specific viscosity is crucial for the optimal operation of the HEMI, particularly its MDS system.
Beyond just the viscosity, the oil must also meet specific industry and manufacturer standards:
API Certification: Look for oil that is API certified, typically displaying the “starburst” symbol on the bottle. For a 2018 vehicle, this would generally be an API SN, SN Plus, or SP rating, indicating it meets the latest performance standards for gasoline engines.
Chrysler Material Standard (MS-6395): This is perhaps the most critical specification. Ram (a Stellantis brand) requires that the oil specifically meets or exceeds the Chrysler MS-6395 material standard. This standard ensures the oil has the necessary additive package and properties for the unique demands of the HEMI engine, including protection for the MDS system components. Always check the product label for this designation.
Synthetic vs. Conventional vs. Blend:
While the manufacturer specifies the viscosity and standard, it doesn’t always explicitly mandate synthetic oil. However, for a high-performance engine like the HEMI, full synthetic 5W-20 oil that meets MS-6395 is highly recommended. Synthetic oils offer superior protection against wear, better performance in extreme temperatures (both hot and cold), and extended drain intervals compared to conventional oils. They also maintain their viscosity and lubricating properties for longer, which is beneficial for the engine’s long-term health. A synthetic blend is a good compromise if full synthetic is beyond your budget, but prioritize meeting the MS-6395 standard above all else.
Oil Filter Recommendations
Don’t overlook the importance of a quality oil filter. A good filter works in tandem with the correct oil to keep your engine clean. For the 2018 Ram 1500 5.7L, it’s generally best to use:
Mopar OEM Oil Filter: These filters are designed specifically for your Ram’s engine and are guaranteed to meet all manufacturer specifications for filtration efficiency and flow.
High-Quality Aftermarket Filters: If opting for an aftermarket brand, choose reputable manufacturers that offer filters meeting or exceeding OEM standards. Look for brands known for their filtration performance and robust construction.
A cheap, low-quality filter can restrict oil flow or fail to adequately remove contaminants, potentially leading to engine damage.
Oil Change Intervals for Optimal Performance
The recommended oil change interval for the 2018 Ram 1500 5.7L HEMI can vary.
Vehicle’s Oil Life Monitoring System: Your Ram 1500 is equipped with an oil life monitoring system that tracks engine operating conditions and calculates when an oil change is due. This is often the most accurate guide.
General Guideline: If you don’t rely solely on the monitoring system or for severe duty, a common guideline is every 8,000 to 10,000 miles (13,000 to 16,000 km) or 6 to 12 months, whichever comes first.
Severe Driving Conditions: If you frequently drive under severe conditions (e.g., heavy towing, off-roading, extreme temperatures, dusty environments, or consistent short trips), more frequent oil changes, perhaps every 5,000 miles (8,000 km) or 6 months, might be advisable.
Always consult your owner’s manual for the most precise and up-to-date recommendations based on your specific vehicle and driving habits.
Performing a DIY Oil Change on Your 2018 Ram 1500 5.7L
If you’re comfortable with basic vehicle maintenance, changing the oil on your Ram 1500 is a straightforward process:
1. Gather Supplies: You’ll need 7 quarts of SAE 5W-20 oil meeting MS-6395, a new oil filter, a drain pan, a wrench for the drain plug, an oil filter wrench, and a funnel.
2. Warm the Engine: Drive the truck for a few minutes to bring the oil to operating temperature, which helps it drain more thoroughly.
3. Drain Oil: With the engine off and cool enough to safely work under, locate the drain plug on the oil pan. Place your drain pan underneath and remove the plug. Allow all the old oil to drain completely.
4. Replace Filter: Remove the old oil filter. Be prepared for a small amount of oil to spill. Apply a thin coat of new oil to the rubber gasket of the new filter before screwing it on by hand until snug.
5. Refill Oil: Replace the drain plug securely. Using a funnel, slowly add 6.5 quarts of the new oil into the engine’s oil fill port.
6. Check Level: Start the engine, let it run for about a minute to circulate the new oil, then shut it off. Wait 5-10 minutes for the oil to settle, then check the dipstick. Add the remaining oil as needed to reach the full mark.
Proper disposal of used oil is crucial for environmental protection. Many auto parts stores and service centers offer free used oil recycling.
Common Mistakes to Avoid
Ignoring MS-6395: This is paramount for HEMI engines. Do not use oil that doesn’t explicitly state compliance.
Wrong Viscosity: Using 10W-30 or other weights can negatively impact performance and MDS operation.
Overfilling or Underfilling: Always check the dipstick and maintain the proper level.
Neglecting Oil Changes: Sticking to recommended intervals is non-negotiable for engine health.
Using Low-Quality Filters: A good filter is an essential partner to good oil.
By understanding and adhering to the recommended 2018 Ram 1500 5.7 oil capacity and type, you’re investing directly in the power, reliability, and longevity of your truck’s HEMI engine. This attention to detail will ensure your Ram continues to perform at its best for many miles to come.
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Source:
Ram 1500 Owner’s Manual and Manufacturer Specifications