Keeping your 2012 Infiniti QX56 running smoothly requires more than just a routine visit to the mechanic; it demands a commitment to high-quality lubricants tailored for its powerful 5.6L V8 engine. This full-size SUV is built for capability, whether you are navigating city streets or towing heavy loads, but that power places significant stress on its internal components. Using the correct motor oil, transmission fluid, and other essential lubricants can prevent premature wear, maintain fuel efficiency, and ensure the vehicle operates reliably in extreme temperatures. AMSOIL synthetic lubricants provide a level of protection that exceeds standard industry requirements, making them an ideal choice for vehicle owners who want to maximize the lifespan and performance of their Infiniti.
Recommended AMSOIL Products
- AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil – The top choice for maximum engine protection, offering up to 25,000 miles of service and superior resistance to high temperatures and wear.
- AMSOIL Extended-Life 5W-30 100% Synthetic Motor Oil – A cost-effective option that delivers 20,000 miles of protection while providing excellent cleaning power to keep the engine running smoother.
- AMSOIL OE 5W-30 100% Synthetic Motor Oil – Designed to outperform conventional oils and mimic the performance required by original equipment manufacturers, with a focus on preventing turbocharger wear.
- AMSOIL 5W-30 100% Synthetic High-Mileage Motor Oil – Specifically formulated for vehicles with over 75,000 miles, featuring enhanced detergents to clean the engine and reduced sludge formation.
- AMSOIL Oil Filter – Provides a high efficiency of 99% at 20 microns to remove contaminants and extends service life to match the oil change intervals.
- WIX Oil Filter – A premium aftermarket option that offers improvements over many OEM-branded filters for reliable filtration.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A pre-mixed formulation that provides protection up to 150,000 miles or 5 years for the cooling system.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated option suitable for extended service intervals in both light trucks and heavy-duty applications.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Engineered to withstand heavy towing and high temperatures, ensuring smooth shifts and reduced transmission heat.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – A high-performance fluid that protects against wear while maintaining fuel efficiency.
- AMSOIL SEVERE GEAR® 80W-90 100% Synthetic Gear Lube – Ideal for the front differential, offering advanced wear protection and resistance to thermal runaway.
- AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube – A versatile synthetic gear lube recommended for the rear differential where synthetic oil is required, providing excellent protection in all conditions.
- AMSOIL 75W-90 Long Life 100% Synthetic Gear Lube – An option with extended service intervals designed for high-load protection.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Provides excellent brake responsiveness and a stable viscosity across a wide temperature range for safe stopping power.
- AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid – Formulated to reduce friction and keep seals soft to prevent leaks, ensuring quiet and smooth steering operation.
Understanding the oil capacity and specific requirements for your Infiniti is crucial before starting a service. For the 2012 Infiniti QX56 with the 5.6L V8 engine, the oil capacity is 6.9 quarts when changing the filter as well. It is important to note that after refilling the oil, you must check the oil level to ensure it is correct. The drain plug requires a torque of 25 ft-lbs, and you should always install a new washer on the drain bolt during the replacement process to prevent leaks. This vehicle relies on high-quality fluids to handle the stress of its large displacement engine, which generates significant heat and power. By adhering to these specifications, you ensure that the engine receives the necessary lubrication to reduce friction and dissipate heat effectively.
Engine Oil and Filter Selection
The heart of the 2012 Infiniti QX56 is the 5.6-liter VK56VD V8 engine. To protect this powerful motor, AMSOIL offers a range of synthetic oils tailored to different driving needs and vehicle ages. The Signature Series 5W-30 stands out as the ultimate choice for enthusiasts seeking maximum protection. It provides up to 25,000 miles of service life, significantly extending the time between changes while offering superior resistance to horsepower loss and wear compared to conventional oils. This is particularly beneficial for drivers who engage in severe service, such as frequent towing or driving in extreme weather conditions.
For those looking for a balanced option with extended intervals, the Extended-Life 5W-30 synthetic motor oil delivers 20,000 miles of protection. This formula features enhanced cleaning power to help keep the engine running smoothly for a longer duration. If you prefer a fluid that closely mimics the performance of original factory oils, the OE 5W-30 Synthetic Motor Oil is an excellent choice. It fights sludge and deposits while protecting turbochargers effectively. Additionally, for vehicles that have accumulated significant mileage, the High-Mileage 5W-30 is designed with unique chemistry to boost cleaning and reduce sludge by up to 67%, making it ideal for engines over 75,000 miles.
Filtration is just as critical as the oil itself. The AMSOIL Oil Filter is engineered to provide a filtering efficiency of 99 percent at 20 microns, ensuring that harmful contaminants are removed from the oil before they can damage engine components. It also offers greater capacity for small contaminants compared to competing filters. For owners who prefer established aftermarket brands, the WIX Oil Filter serves as a high-quality alternative, offering premium media that improves upon many original equipment manufacturer standards.
Transmission, Cooling, and Differential Fluids
The 7-speed automatic transmission in the QX56 requires a fluid that can handle the demands of heavy towing, elevated temperatures, and challenging terrain. The Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid is designed to withstand these rigors while remaining fluid even in sub-zero temperatures. This ensures reserve protection during heavy use and helps maintain optimal transmission performance. The OE Fuel-Efficient fluid is another strong contender, protecting against wear and providing efficient operation.
Temperature management is vital for the longevity of any engine. The 2012 Infiniti QX56 has a cooling system capacity of 15.7 quarts. AMSOIL Passenger Car & Light Truck Antifreeze & Coolant offers a unique poly-organic acid formulation that provides protection for up to 150,000 miles or 5 years. For those who prefer a concentrated solution, the Propylene Glycol Antifreeze and Engine Coolant allows for mixing with distilled water and offers protection up to 150,000 miles in passenger cars and light trucks, or significantly longer in heavy-duty applications. Both options are free from phosphates, nitrates, and other corrosive additives, ensuring the safety of all cooling system metals, gaskets, and hoses.
For the differential systems, the front requires 1.6 pints of lubricant, while the rear differential needs 3.7 pints. The rear differential specifically requires a synthetic oil. AMSOIL SEVERE GEAR® 80W-90 100% Synthetic Gear Lube is highly recommended for the front differential, offering advanced protection against wear and rust. For the rear differential, the SEVERE GEAR® 75W-90 100% Synthetic Gear Lube is the ideal choice, meeting the requirement for synthetic lubrication while providing exceptional protection against rust, corrosion, and thermal runaway. These synthetic gear lubes contain friction modifiers for limited-slip applications, helping to extend the life of seals and equipment.
Other Essential Fluids and Additives
Maintenance extends beyond the engine and transmission. The brake system of the QX56 benefits from AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid. This fluid provides excellent responsiveness for ABS and traction control systems while maintaining a stable viscosity over a wide temperature range, ensuring consistent braking performance. For the power steering system, the 100% Synthetic Multi-Vehicle Power Steering Fluid helps seals remain soft to prevent leaks, reduces friction, and offers strong anti-wear protection for long fluid life.
To further protect the vehicle, especially during storage or seasonal changes, AMSOIL Gasoline Stabilizer helps keep fuel fresh for up to 12 months, fighting ethanol corrosion and varnish buildup. The AMSOIL Engine Fogging Oil provides a rust preventive layer for internal engine components during long periods of inactivity. Additionally, the AMSOIL P.i.® Performance Improver Gasoline Additive can restore up to 14% horsepower and clean fuel injectors, improving overall fuel economy and engine performance.
About the 2012 Infiniti QX56
The 2012 Infiniti QX56 is a robust full-size luxury SUV that serves as a flagship model for the Infiniti brand, which is Nissan’s luxury vehicle division. Built on a durable truck platform, the QX56 is designed to offer a blend of luxury, comfort, and immense capability. It is powered by a massive 5.6-liter V8 engine, delivering strong performance suitable for both highway cruising and towing heavy loads. This vehicle appeals to families and individuals who require a spacious interior, premium materials, and the power to handle challenging driving conditions without sacrificing comfort.
As a large-scale SUV, the QX56 features a roomy cabin with seating for up to eight passengers, making it a versatile choice for large groups. The suspension is tuned to provide a smooth ride despite the vehicle’s substantial size, absorbing road imperfections effectively. It has gained a reputation for reliability and durability among owners who rely on it for daily transportation or occasional heavy-duty tasks. The vehicle’s design reflects a focus on practicality and performance, ensuring that owners have a vehicle that can handle various terrains and weather conditions while providing a refined driving experience. Its presence on the road is commanding, yet its interior offers a serene environment, highlighting the balance Infiniti aims to achieve between utility and luxury.
Conclusion
Maintaining your 2012 Infiniti QX56 with premium synthetic lubricants is a proactive step toward ensuring its longevity and performance. Whether you are driving through scorching summers or freezing winters, the recommended AMSOIL products provide a layer of protection that standard fluids cannot match. By selecting the right oil, filter, transmission fluid, and coolant for your specific vehicle, you can reduce wear, improve efficiency, and enjoy a smoother, more reliable driving experience. Trusting in high-quality synthetic lubricants helps you get the most out of your investment, keeping your Infiniti running at its peak for years to come.