The 2018 Nissan Altima oil type and its correct capacity are fundamental aspects of maintaining your vehicle’s engine health and longevity. Understanding these specifications is crucial for any Altima owner, ensuring smooth operation, optimal performance, and preventing costly damage. Using the wrong type of oil or an incorrect amount can lead to reduced fuel efficiency, increased wear and tear, and even severe engine problems down the road.
Why Your Engine Needs the Right Oil
Engine oil is the lifeblood of your vehicle. It performs several critical functions that keep your engine running efficiently:
1. Lubrication: Oil reduces friction between moving parts, preventing wear and overheating.
2. Cooling: It helps dissipate heat generated by combustion and friction, keeping engine temperatures stable.
3. Cleaning: Engine oil carries away contaminants like sludge, varnish, and metal particles, preventing them from accumulating and causing damage.
4. Sealing: It creates a seal between the piston rings and cylinder walls, helping to maintain compression and power.
5. Corrosion Protection: Oil contains additives that protect metal surfaces from rust and corrosion.
Neglecting oil changes or using an unsuitable oil compromises these functions, accelerating engine wear and potentially leading to premature failure.
Understanding the 2018 Nissan Altima Oil Type
The 2018 Nissan Altima was offered with two main engine options: a 2.5-liter 4-cylinder engine and a 3.5-liter V6 engine. The recommended oil type can vary slightly depending on which engine your vehicle has. Always check your owner’s manual for the most precise information, but here’s a general guide for USA and Canada models:
For the 2.5L 4-Cylinder Engine:
Viscosity: The primary recommendation for the 2.5L engine is 0W-20 synthetic motor oil. The “0W” indicates its excellent cold-weather performance, allowing it to flow easily during cold starts, while the “20” represents its viscosity at operating temperature. This low viscosity contributes to better fuel economy.
Specification: Look for oil that meets or exceeds the API SN, SP (American Petroleum Institute) or ILSAC GF-5, GF-6 (International Lubricant Standardization and Approval Committee) standards. These ratings ensure the oil contains the necessary additives for modern engines, protecting against wear, sludge, and piston deposits.
For the 3.5L V6 Engine:
Viscosity: For the 3.5L V6 engine, the recommended oil viscosity is typically 5W-30 synthetic motor oil. This slightly thicker oil provides robust protection for the higher performance and potentially higher operating temperatures of the V6 engine.
Specification: Similar to the 4-cylinder, the oil should meet or exceed API SN, SP or ILSAC GF-5, GF-6 standards.
Synthetic vs. Conventional Oil:
Nissan generally recommends using full synthetic or a synthetic blend motor oil for the 2018 Altima. Synthetic oils offer superior performance, better protection against wear, and enhanced stability across a wider range of temperatures compared to conventional mineral oils. While they might have a higher upfront cost, their benefits often outweigh the difference, especially when considering extended oil change intervals.
Oil Capacity for Your 2018 Altima
Knowing the correct oil capacity is just as important as choosing the right type. Overfilling or underfilling your engine with oil can both cause significant problems. The capacities listed below are for an oil change that includes replacing the oil filter, which is standard practice.
2.5L 4-Cylinder Engine: Approximately 4.8 US Quarts (4.5 Liters).
3.5L V6 Engine: Approximately 5.1 US Quarts (4.8 Liters).
Important Tip: Always add oil incrementally. After adding most of the recommended amount, start the engine and let it run for a minute, then turn it off and wait a few minutes for the oil to settle. Check the oil level using the dipstick, ensuring it falls within the “full” marks. Top off if necessary, being careful not to overfill.
Recommended Oil Change Interval
Even with the correct oil type and capacity, regular oil changes are vital. For most 2018 Nissan Altima owners, the recommended oil change interval is generally:
Every 5,000 to 7,500 miles (8,000 to 12,000 km) or every 6 months, whichever comes first.
However, driving conditions play a significant role. If you frequently drive under “severe” conditions, such as:
Driving in very hot or very cold temperatures
Frequent short trips (engine doesn’t fully warm up)
Stop-and-go city driving
Towing or carrying heavy loads
Driving on dusty roads
You might need to change your oil more frequently, possibly every 3,000 to 5,000 miles (4,800 to 8,000 km) or every 3-4 months. Always refer to the “Maintenance Schedule” section of your owner’s manual for specific guidelines tailored to your driving habits.
Choosing the Right Oil Filter
While focusing on oil type and capacity, don’t overlook the importance of a quality oil filter. A good oil filter traps contaminants effectively, preventing them from recirculating through your engine. Always replace the oil filter during every oil change. You can opt for an OEM (Original Equipment Manufacturer) Nissan filter or a reputable aftermarket brand that meets or exceeds OEM specifications.
DIY or Professional Service?
Changing your oil yourself can be a rewarding and cost-effective task if you have the right tools and knowledge. However, if you’re not comfortable working under your car, or simply prefer convenience, professional service at a dealership or trusted independent mechanic is a reliable option. They will ensure the correct oil type and capacity are used, and often perform a multi-point inspection as part of the service.
Conclusion
Maintaining your 2018 Nissan Altima’s engine health starts with understanding and adhering to its specific oil requirements. By using the recommended 0W-20 (for 2.5L) or 5W-30 (for 3.5L) synthetic motor oil with the correct API/ILSAC specifications and capacities, along with regular oil and filter changes, you’ll ensure your Altima continues to run smoothly, efficiently, and reliably for many years to come. Always consult your owner’s manual for the most accurate and up-to-date information for your specific vehicle.
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Source:
Nissan North America, Inc. – 2018 Nissan Altima Owner’s Manual. (Specific page references for oil type and capacity can be found in the “Specifications” and “Maintenance” sections of the manual.)