Proper lubrication is the single most effective way to extend the lifespan of your 2023 Infiniti QX80. This massive SUV is powered by the 5.6L VK56VD V8 engine, a robust powerplant that demands high-performance fluids to handle towing, hauling, and daily driving with ease. Using the correct viscosity and certified products ensures that your transmission, differential, and cooling systems operate at peak efficiency, preventing premature wear and costly repairs down the road.
Recommended AMSOIL Products
- AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil – Delivers unsurpassed engine protection for up to 25,000 miles and superior resistance against horsepower loss and wear.
- AMSOIL Extended-Life 0W-20 100% Synthetic Motor Oil – Offers up to 20,000 miles of protection with enhanced cleaning power to keep the engine running smoother and longer.
- AMSOIL OE 0W-20 100% Synthetic Motor Oil – An exceptional value that fights sludge and deposits while protecting turbochargers, outperforming conventional oils for OEM mileage intervals.
- AMSOIL 0W-20 100% Synthetic High-Mileage Motor Oil – Formulated specifically for engines with over 75,000 miles to reduce sludge, boost detergency, and protect against wear for up to 12,000 miles.
- AMSOIL Oil Filter – Provides 99% filtration efficiency at 20 microns with high capacity for contaminants, reducing engine wear and allowing for extended oil change intervals.
- WIX Oil Filter – Features premium media that offers improvements over original equipment manufacturer-branded filters for reliable protection.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique OAT formulation designed for a wide variety of vehicles, providing protection up to 150,000 miles or 5 years.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated antifreeze requiring mixing with water, offering extended service life up to 150,000 miles or 5 years in passenger cars and light trucks.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Withstands the rigors of heavy towing and elevated temperatures while remaining fluid in sub-zero conditions.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Protects against wear and provides fuel-efficient performance for the 7-speed automatic transmission.
- AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube – Provides advanced protection against wear and rust, ideal for rear differentials requiring GL-5 specifications.
- AMSOIL 75W-90 Long Life 100% Synthetic Gear Lube – Engineered for high-load gear and bearing protection with extended service life and better cold-weather shifting.
- AMSOIL SEVERE GEAR® 75W-110 100% Synthetic Gear Lube – A high-viscosity option for severe conditions, controlling thermal runaway and reducing operating temperatures.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Ensures excellent ABS and traction-control responsiveness with a stable viscosity over a wide temperature range.
- AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid – Reduces friction, keeps seals soft to prevent leaks, and resists heat for long fluid life.
Engine Oil and Filter Specifications
The heart of the 2023 Infiniti QX80 is the 5.6-liter VK56VD V8 engine. This naturally aspirated powerhouse requires a specific viscosity to maintain proper oil pressure and film strength across all operating temperatures. AMSOIL recommends a 0W-20 viscosity for all conditions, which is a full-synthetic grade that flows easily at startup to reduce wear while maintaining protection at high heat. The engine oil capacity is 6.9 quarts when the oil filter is included. After refilling, it is crucial to check the oil level to ensure it falls within the safe operating range. The oil drain plug should be torqued to between 22 and 29 foot-pounds, and a new washer must be installed on the drain bolt every time to prevent leaks.
When selecting an oil, you have several top-tier options. AMSOIL Signature Series 0W-20 is the ultimate choice for maximum performance, offering up to 25,000 miles of guaranteed protection. It contains advanced additives that fight sludge and provide 75% more protection against horsepower loss compared to conventional standards. If you prefer extended life at a slightly lower cost point, the AMSOIL Extended-Life 0W-20 provides up to 20,000 miles of protection and is excellent for vehicles subjected to moderate to severe driving conditions. For those looking to outperform the stock fill without breaking the budget, the AMSOIL OE 0W-20 is a reliable synthetic option that protects turbochargers and fights deposits. If your QX80 has accumulated significant mileage, the AMSOIL 0W-20 High-Mileage formula includes unique chemistry to reduce oil consumption, seal leaks, and clean out sludge buildup from previous conventional oils.
Matching the oil with a high-quality filter is equally critical. The AMSOIL Oil Filter (EA15K13) is designed to maximize efficiency, capturing 99% of contaminants at 20 microns. It features a greater capacity for small wear-causing particles than competing filters, which helps keep the engine lubricated and clean for extended periods. Alternatively, the WIX Oil Filter (57356-EA) is also a recommended fit, offering premium media that improves upon the filtration capabilities of standard OEM filters.
Transmission and Differential Fluids
The 2023 Infiniti QX80 is equipped with a 7-speed automatic transmission, specifically the RE7R01B model. Maintaining this transmission is vital for smooth shifting and longevity. The total fill capacity for the automatic transmission is 10.6 quarts. However, standard maintenance procedures often require different amounts depending on whether you are doing a drain-and-fill or a complete flush. The fluid must meet the RE7R01B and SL083 specifications.
For the transmission, AMSOIL Signature Series Fuel-Efficient Automatic Transmission Fluid is the premium choice. It is engineered to withstand the rigors of heavy towing, which this full-size SUV frequently encounters. It remains fluid in sub-zero temperatures and provides reserve protection during heavy use, ensuring the transmission shifts smoothly even under extreme loads. The AMSOIL OE Fuel-Efficient Automatic Transmission Fluid is another excellent option, designed to protect against wear and extend the life of the transmission system while providing fuel economy benefits.
For the rear differential, the application requires a synthetic GL-5 lubricant. The capacity for the rear differential is approximately 3.8 pints. AMSOIL SEVERE GEAR 75W-90 is highly recommended for this application. It controls thermal runaway, a common issue in heavy-duty applications where differential temperatures can spike. It also contains friction modifiers that are beneficial for limited-slip differentials, ensuring quiet and smooth operation. For those seeking longer service intervals, the AMSOIL 75W-90 Long Life Gear Lube is formulated for 500,000-mile service life in demanding conditions, offering improved seal life and better cold-weather shifting. Additionally, the AMSOIL SEVERE GEAR 75W-110 provides a heavier film strength for vehicles operating in the most severe environments.
Cooling, Braking, and Steering Systems
Keeping the engine at the correct temperature is essential for fuel efficiency and preventing overheating, especially during hot weather or while towing. The 2023 Infiniti QX80 requires a substantial amount of AMSOIL Passenger Car & Light Truck Antifreeze & Coolant, with a total capacity of 16 quarts. The pre-mixed, 50/50 formulation provides protection against corrosion and erosion for up to 150,000 miles or 5 years. It is compatible with all cooling system metals and hoses. For those who prefer a concentrated option, AMSOIL Propylene Glycol Antifreeze requires mixing with distilled water and offers the same extended service life, exceeding OEM requirements for metallic corrosion protection.
Brake safety should never be compromised. The 2023 Infiniti QX80 uses a DOT 3 hydraulic AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid system. The fluid provides a stable viscosity over a wide temperature range, ensuring consistent pedal feel and responsiveness. It is designed to prevent moisture absorption, which can lower the boiling point and lead to brake fade. For the power steering system, AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid is recommended. It helps keep seals soft to prevent leaks, resists heat degradation, and ensures quiet operation. It is compatible with the vehicle’s specific fluid requirements and offers strong anti-wear protection.
Additional Fluids and Maintenance
For vehicles that are driven seasonally or stored for extended periods, preserving the fuel system is key. AMSOIL Gasoline Stabilizer keeps fuel fresh for up to 12 months, preventing varnish and gum buildup that can clog injectors. Similarly, AMSOIL Engine Fogging Oil is ideal for protecting internal engine components during storage, preventing rust and corrosion on cylinder walls and other internal metal surfaces. To maintain optimal fuel system health and performance, AMSOIL P.i. Performance Improver is a powerful additive that can restore lost horsepower and improve fuel economy by cleaning fuel injectors and intake valves.
For general vehicle care, AMSOIL Engine Degreaser effectively removes stubborn grease and grime from engine bays. AMSOIL Miracle Wash provides a waterless wash and wax solution that leaves a protective shine. For cleaning sensitive components, AMSOIL Brake and Parts Cleaner quickly removes oil and grease without leaving residue. AMSOIL Silicone Spray offers a dry lubricating film for rubber and plastic components, preventing cracking and drying, while AMSOIL Heavy-Duty Degreaser dissolves tar and grime for a deep clean.
About the Vehicle
The 2023 Infiniti QX80 is a flagship luxury full-size SUV that commands attention on the road. Built on the robust Nissan Patrol platform, it represents the pinnacle of Infiniti’s utility offerings. The vehicle is powered by the 5.6-liter VK56Vd V8 engine, a naturally aspirated powerplant known for its smooth power delivery and immense torque. This engine is capable of handling heavy loads, making the QX80 a preferred choice for families that need to tow trailers or carry significant cargo without sacrificing comfort. Inside, the cabin is a sanctuary of luxury, featuring high-quality leather, advanced technology, and a spacious three-row seating arrangement that can accommodate up to eight passengers comfortably.
Despite its large dimensions, the QX80 offers a surprisingly refined driving experience. The steering is responsive, and the suspension is tuned to absorb road imperfections, providing a smooth ride even on rough highways. The vehicle’s sophisticated infotainment system and driver-assist technologies make it a safe and connected vehicle, suitable for long road trips. It is a popular choice for those who prioritize space and capability over fuel economy, and it stands as a testament to Infiniti’s commitment to building vehicles that combine rugged utility with premium refinement. Owners appreciate its blend of power, luxury, and practicality, making it a favorite for those who need a capable daily driver that can also handle weekend adventures.