The 2022 Lexus NX450H+ is a sophisticated plug-in hybrid SUV powered by a 2.5-liter four-cylinder engine (Code A25A-FXS). Because this vehicle combines a high-efficiency internal combustion engine with electric drive components, its lubrication requirements are more precise than those of standard combustion-only vehicles. Using the correct viscosity and formulation ensures that the battery system stays cool, the electric motor operates at peak efficiency, and the engine avoids carbon buildup on direct injection ports. Proper fluid maintenance is critical for maintaining the vehicle’s renowned reliability and fuel economy over the long term.
Recommended AMSOIL Products
- AMSOIL Signature Series 0W-16 100% Synthetic Motor Oil – Offers unsurpassed engine protection, allowing for extended drain intervals up to 25,000 miles or one year, making it ideal for drivers seeking maximum performance and durability.
- AMSOIL 0W-16 100% Synthetic Hybrid Motor Oil – Specially engineered for hybrid powertrains with superior sludge control and enhanced corrosion protection to maximize fuel economy in stop-and-go driving conditions.
- AMSOIL OE 0W-16 100% Synthetic Motor Oil – A cost-effective 100% synthetic option that outperforms conventional oils and OEM standard milage intervals while providing excellent protection against wear and deposits.
- AMSOIL Oil Filter – Features a high-efficiency filter media that captures 99% of contaminants down to 20 microns, ensuring clean oil circulation and extended service life to match premium synthetic oils.
- WIX Oil Filter – A premium aftermarket filter option that offers improvements over original equipment manufacturer filters, providing robust media to trap wear-causing particles.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A pre-mixed 50/50 ethylene glycol formulation that exceeds OEM requirements and protects the engine and power control unit for up to 150,000 miles or five years.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated, high-performance alternative that offers superior thermal stability and corrosion protection for the hybrid system’s cooling needs.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Designed to withstand the rigors of the NX450H+ hybrid system, remaining fluid in extreme temperatures and reducing friction for optimal fuel economy.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – A fuel-efficient synthetic fluid that protects against wear and deposits while maintaining proper viscosity for smooth shifting in automatic transmissions.
The 2022 Lexus NX450H+ engine requires a specific oil change procedure to ensure proper filling. The total capacity for the engine oil, including the AMSOIL Oil Filter replacement, is 4.8 quarts. When performing a change, the drain plug must be torqued to 30 ft/lbs, and the gasket should always be replaced to prevent leaks. If SAE 0W-16 is unavailable, SAE 0W-20 may be used temporarily, but it must be switched back to 0W-16 at the next service. It is vital to check the oil level immediately after refilling to ensure the hybrid battery and engine receive adequate lubrication.
Coolant maintenance is equally critical for this plug-in hybrid, as the engine and the Power Control Unit share cooling demands. The engine capacity for coolant is 8.7 quarts, while the Power Control Unit requires an additional 2.1 quarts. AMSOIL’s antifreeze and coolant lines provide the necessary protection against freezing, boiling, and corrosion. The ethylene glycol-based Passenger Car & Light Truck Antifreeze is a ready-to-use 50/50 mix that protects all cooling system metals, gaskets, and hoses. For those preferring a concentrated option that requires mixing with distilled water, the Propylene Glycol Antifreeze offers a longer service life of up to 150,000 miles or five years, ensuring the cooling system remains efficient under heavy load.
The automatic transmission in the NX450H+ relies on the specific P810 fluid standard. The total fill capacity for the transmission is 4.6 quarts. Using a high-quality synthetic transmission fluid is essential to maintain the smooth power delivery characteristic of this hybrid SUV. The Signature Series Fuel-Efficient Automatic Transmission Fluid is formulated to reduce friction, which aids in maximizing the vehicle’s fuel economy. It withstands high temperatures and remains fluid in sub-zero conditions, providing reserve protection during heavy use. The OE Fuel-Efficient version offers similar performance benefits with a formulation that protects against wear and sludge, ensuring long-term transmission reliability.
For owners looking to maintain the peak performance of their 2022 Lexus NX450H+ between scheduled services, AMSOIL’s gasoline additives offer significant benefits. The P.i. Performance Improver is a highly recommended fuel additive that restores up to 14% horsepower and cleans GDI fuel injectors to 100% flow rate after just one tank of fuel. This helps prevent carbon buildup, a common issue in direct injection engines, and reduces the need for higher-octane fuel. Additionally, the Upper Cylinder Lubricant Corrosion Inhibitor provides essential lubrication for the fuel system and upper cylinders, working in tandem with the gasoline stabilizer to keep the fuel system clean and protected during seasonal storage.
About the 2022 Lexus NX450H+
The 2022 Lexus NX450H+ represents a significant leap forward for the Lexus NX line, marking the debut of the brand’s first plug-in hybrid powertrain in this popular compact luxury SUV class. Built on the Toyota New Global Architecture (TNGA-K) platform, the vehicle shares its DNA with other Toyota Group SUVs but distinguishes itself with Lexus’s signature blend of quiet comfort, refined handling, and cutting-edge hybrid technology. The “450h+” designation signals a focus on efficiency and electrified performance, distinguishing it from the standard NX 350h or the non-hybrid NX 250 and NX 350 models.
Under the hood lies a 2.5-liter four-cylinder engine, designated as the A25A-FXS, which is part of Toyota’s Dynamic Force Engine family known for exceptional thermal efficiency. This engine works in harmony with electric motors to deliver a combined system horsepower that is tuned for both spirited acceleration and smooth, seamless transitions between electric and gasoline power. The 2022 model year introduced several updates, including a more robust 18.1 kWh battery pack, which provides a substantial all-electric driving range compared to previous iterations. This larger battery allows the NX450H+ to function as a true plug-in hybrid, capable of powering the vehicle on electric energy alone for short commutes, reducing reliance on gasoline and lowering emissions.
Owners of the NX450H+ appreciate its spacious interior, which features the latest Lexus Infotainment system and a high level of craftsmanship typical of the brand. The vehicle sits in a competitive market segment alongside other luxury compact crossovers, yet it stands out for its smooth ride quality and the seamless integration of its hybrid drivetrain. The driving character is refined, offering a quiet cabin and responsive handling that makes it suitable for both city driving and highway cruising. The integration of the electric motor provides immediate torque, giving the vehicle a responsive feel that belies its crossover classification.
Like any sophisticated hybrid vehicle, the 2022 NX450H+ can face specific maintenance challenges related to its hybrid powertrain and direct injection technology. One common issue in similar vehicles is the accumulation of carbon deposits on intake valves, which can affect performance and fuel economy over time. The use of AMSOIL synthetic motor oils, particularly those with enhanced cleaning properties, can help mitigate this buildup and maintain valve cleanliness. Additionally, hybrid engines often experience more frequent stop-and-go operation, which can lead to oil thermal stress and potential sludge formation; premium synthetic fluids like the AMSOIL Hybrid Motor Oil are specifically formulated to resist these conditions better than conventional oils. Another potential area of concern is the cooling system’s reliability, as the heat generated by the battery and electric motors adds an extra layer of thermal complexity; maintaining the cooling system with high-quality antifreeze ensures these components stay within optimal operating temperatures. Finally, the automatic transmission in a hybrid system undergoes unique stress profiles due to the interaction between the internal combustion engine and electric motors; using a transmission fluid designed for fuel efficiency and thermal stability helps ensure smooth shifting and long-term durability.
By adhering to the recommended fluid specifications and utilizing high-performance synthetic lubricants, owners can ensure their 2022 Lexus NX450H+ continues to deliver the premium experience it was designed for. Whether it is for daily commuting, family haulage, or weekend adventures, the correct maintenance regimen is the key to maximizing the longevity and performance of this advanced hybrid vehicle.