Understanding the 2018 Nissan Armada oil type is fundamental to ensuring the longevity and peak performance of this full-size SUV. The vehicle's robust 5.6-liter V8 engine generates substantial power, and maintaining the correct lubrication is not just a maintenance task but a critical requirement for reliability. Using the improper viscosity or grade can lead to decreased fuel efficiency, increased engine wear, and potentially severe damage over time, making this specification a primary concern for any owner.
Manufacturer Specifications and Recommended Grade
For the 2018 model year, Nissan specifies that the Armada requires premium-grade motor oil to function optimally. The viscosity grade should be 0W-20, which is specifically engineered to provide the necessary protection while also contributing to the vehicle's fuel economy goals. This low-viscosity oil flows quickly at cold startup, reducing friction and wear on critical components during the initial moments of operation, which is when the engine is most vulnerable.
Why Premium Synthetic Oil is Essential
While the vehicle may run on conventional alternatives in a pinch, Nissan strongly recommends using a full synthetic oil that meets the GM dexos1 specification. Synthetic formulations are engineered to maintain their viscosity in extreme temperatures, offering superior protection in the intense heat under the hood of the Armada. They also resist the formation of sludge and deposits, ensuring the oil passages remain clean and the engine operates smoothly for longer intervals between changes.
Capacity and the Importance of the Drain Plug
When performing an oil change, whether professionally or as a DIY project, it is vital to know the correct fill amount. The 2018 Nissan Armada typically requires approximately 6.9 quarts of oil for a complete refill, though this can vary slightly depending on the specific filter used. Utilizing a high-quality drain plug washer is non-negotiable; this component ensures a proper seal and prevents costly leaks that could lead to a sudden loss of oil pressure while driving.
Interpreting the Dipstick Accurately
After adding the new oil, checking the level correctly is just as important as selecting the right type. Owners should park the vehicle on a level surface, turn off the engine, and wait a few minutes for the oil to settle back into the sump. The dipstick provides a clear indication of the oil level and its condition; it should read between the minimum and maximum markers, and the color should be translucent amber rather than dark and gritty, indicating it is still effective.
The Role of the Oil Filter
The efficiency of the oil type is significantly dependent on the quality of the oil filter installed. A high-efficiency filter is designed to capture microscopic particles and contaminants that circulate through the engine oil. For the 2018 Armada, ensuring the gasket on the new filter is coated with fresh oil prior to installation is a crucial step to prevent air leaks and ensure a proper seal, which maintains consistent oil pressure.
Synthetic vs. Conventional: Making the Right Choice
Although the 0W-20 specification allows for the use of conventional oil, the demands of modern driving often make synthetic the superior choice. The consistent molecular structure of synthetic oil provides better lubrication in the high-stress environment of the Armada's V8. It offers better protection during stop-and-go traffic, improves cold-weather starting, and extends the duration of the oil change interval, ultimately providing better value despite the higher upfront cost.
Adhering to the Change Interval Schedule
Even when using the correct 2018 Nissan Armada oil type, neglecting the change schedule can diminish the vehicle's performance. Nissan recommends changing the oil and filter at regular intervals to remove the accumulated acids and metallic particles. Sticking to the maintenance schedule as outlined in the owner's manual is the most reliable method to preserve the engine's warranty and ensure it delivers the robust towing capability and smooth ride the Armada is known for.
