The 2016 Infiniti QX80 is a substantial full-size SUV built on a robust platform, powered by a 5.6-liter V8 engine that demands high-quality lubrication to maintain its performance over time. Proper maintenance of this vehicle’s fluids is essential, as the engine, transmission, and drivetrain operate under significant thermal and mechanical stress, particularly when hauling or towing. Using the correct specifications ensures that all moving parts receive adequate protection against wear, preventing premature degradation and maintaining the vehicle’s efficiency.
Recommended AMSOIL Products
- AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil – The top-tier choice offering up to 25,000 miles of protection and superior resistance to high-temperature breakdown for the 5.6L V8.
- AMSOIL Extended-Life 0W-20 100% Synthetic Motor Oil – Provides an excellent balance of cleaning power and extended drain intervals, guaranteeing 20,000 miles of protection.
- AMSOIL OE 0W-20 100% Synthetic Motor Oil – A budget-friendly synthetic option designed to outperform conventional oils while meeting OEM requirements with extended protection.
- AMSOIL 0W-20 100% Synthetic High-Mileage Motor Oil – Specifically formulated with enhanced detergents and anti-wear additives for vehicles with over 75,000 miles to reduce sludge and consumption.
- AMSOIL Oil Filter – Engineered with premium filtration media to capture 99 percent of contaminants at 20 microns, extending engine life and performance.
- WIX Oil Filter – A high-quality alternative featuring premium media that offers superior filtration compared to many original equipment manufacturer (OEM) branded filters.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A pre-mixed, ethylene glycol formula that protects cooling system metals and hoses for up to 150,000 miles or five years.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated, non-toxic option that offers extended service life and superior protection against corrosion and erosion.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Designed to withstand heavy towing and elevated temperatures, this fluid helps maintain fuel efficiency and smooth shifting.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – A cost-effective synthetic transmission fluid that delivers reliable protection and meets original equipment specifications.
- AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube – Ideal for the QX80’s rear differential, providing extreme wear protection and thermal resistance with friction modifiers for limited-slip applications.
- AMSOIL SEVERE GEAR® 75W-110 100% Synthetic Gear Lube – A heavier viscosity option for high-stress differential service, offering advanced protection against rust and corrosion.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Delivers excellent ABS responsiveness and a stable viscosity across a wide temperature range for safe braking performance.
- AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid – Keeps seals soft to prevent leaks while providing strong anti-wear protection and high-temperature resistance for the steering system.
When performing maintenance on the 2016 Infiniti QX80, selecting the right fluid starts with understanding the engine’s requirements. The 5.6-liter V8 is a powerful naturally aspirated engine that operates at high temperatures. For this application, AMSOIL Signature Series 0W-20, Extended-Life 0W-20, OE 0W-20, and High-Mileage 0W-20 motor oils offer excellent flow during cold starts and maintain film strength under heavy loads. The standard engine capacity is 6.9 quarts when including a filter replacement. It is crucial to verify the oil level after the refill and ensure the drain plug is torqued between 22 and 29 ft/lbs with a new washer installed.
For owners looking to maximize the intervals between changes, the AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil provides up to 25,000 miles of protection, outperforming industry standards. If the vehicle has accumulated over 75,000 miles, the AMSOIL 0W-20 100% Synthetic High-Mileage Motor Oil formula is beneficial, as it contains boosters to reduce oil consumption and sludge. Pairing these oils with a high-efficiency filter, such as the AMSOIL Oil Filter, ensures that contaminants are removed effectively, extending the life of internal engine components. For a value option, the WIX Oil Filter is also a high-quality choice.
Transmission and Drivetrain Protection
The 2016 Infiniti QX80 utilizes a 7-speed automatic transmission (model RE7R01B) that requires a fluid specifically formulated to handle the torque output of the V8. The total fill capacity for the automatic transmission is 10.6 quarts. Using a synthetic fluid like the AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid helps the transmission remain fluid in extreme temperatures and withstand the heat generated during towing. For those seeking a value option without sacrificing synthetic benefits, the AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid is a robust choice.
Differential service is equally critical for this heavy-duty SUV. The rear differential requires a synthetic GL-5 lubricant, with a capacity of 3.7 pints. Because synthetic oil is required for this application, the AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube is the primary recommendation. It contains friction modifiers specifically for limited-slip differentials and controls thermal runaway. For severe conditions, the AMSOIL SEVERE GEAR® 75W-110 100% Synthetic Gear Lube variant offers increased protection against wear. The AMSOIL 75W-90 Long Life 100% Synthetic Gear Lube is also available as an option that supports extended service intervals.
Cooling, Braking, and Steering Systems
Keeping the cooling system operating efficiently is vital for the longevity of the 5.6L engine. The total coolant capacity is 17.2 quarts. The AMSOIL Passenger Car & Light Truck Antifreeze & Coolant is a ready-to-use 50/50 pre-mix that protects all metals and hoses, eliminating the need to mix concentrates. For a non-toxic alternative that requires mixing with water, the AMSOIL Propylene Glycol Antifreeze and Engine Coolant is engineered for superior corrosion inhibition.
Safety systems also require attention. The QX80 uses a hydraulic brake system compatible with DOT 3 fluids. The AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid resists boiling and maintains consistent pedal feel. For the power steering system, the AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid helps reduce friction, prevents leaks by keeping seals soft, and ensures quiet operation even in cold weather.
About the Vehicle
The 2016 Infiniti QX80 stands as a formidable competitor in the luxury full-size SUV segment, derived from the Nissan Patrol and Armada platforms. This vehicle is defined by its massive presence and rugged capability, offering seating for up to eight passengers with a focus on comfort and power. Powered by the reliable VK56VD 5.6-liter V8 engine, the QX80 delivers substantial torque, making it an excellent choice for towing large trailers or navigating challenging terrain while maintaining a smooth ride.
Originally developed for the Asian and North American markets, this generation of the QX80 emphasizes spaciousness and advanced technology within a traditional SUV chassis. It represents the pinnacle of Infiniti’s luxury utility offerings, designed for families or individuals who require the ability to carry heavy loads without sacrificing premium amenities. The vehicle’s reputation for durability is well-established, particularly when maintained with high-performance synthetic lubricants that meet the strict demands of its heavy-duty powertrain. Owners appreciate the blend of traditional mechanical reliability with modern conveniences, making it a preferred vehicle for long-distance travel and off-road exploration.
Additional Maintenance Products
Beyond essential fluids, maintaining the QX80 involves various other care products. For fuel system health, the AMSOIL P.i.® Performance Improver Gasoline Additive is highly effective, restoring up to 14% horsepower and cleaning carbon deposits from fuel injectors. The AMSOIL Upper Cylinder Lubricant Corrosion Inhibitor provides additional protection for the fuel system and cylinders. During seasonal storage, the AMSOIL Gasoline Stabilizer keeps fuel fresh for up to 12 months, preventing varnish buildup, while the AMSOIL Engine Fogging Oil protects internal components from rust during inactivity.
Cleaning and protection products also play a role in preserving the vehicle’s appearance and function. The AMSOIL Brake and Parts Cleaner effectively removes contaminants without leaving residue, and the AMSOIL Heavy-Duty Degreaser tackles tough grease on engine surfaces. For exterior care, the AMSOIL Miracle Wash Waterless Wash and Wax Spray provides a protective shine, and the AMSOIL Exterior Ceramic Spray adds a hydrophobic layer that sheds water and resists UV rays. Interior detailing is simplified with the AMSOIL Interior Detailer – Light Lemon and AMSOIL Interior Detailer – Scent Free, which trap odors and offer UV protection for dashboard and upholstery surfaces. These products, along with essential lubricants, ensure the Infiniti QX80 remains in peak operating condition year after year.