The 2021 Lexus NX300 is a sophisticated compact luxury crossover that demands precise maintenance to ensure its turbocharged engine and transmission operate at peak efficiency. This vehicle, powered by the 2.0-liter 8AR-FTS turbocharged four-cylinder engine, benefits significantly from the advanced synthetic lubrication technology found in AMSOIL products. Using the correct fluids is not merely a recommendation but a necessity for owners who want to maximize the longevity of their vehicle, maintain the performance benefits of the turbocharger, and ensure smooth operation in both cold starts and high-heat driving conditions. From the first drop of oil change to the final check of brake fluid, selecting the right synthetic solutions provides a layer of protection that conventional oils cannot match.
Recommended AMSOIL Products
- AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil – The top-tier choice for the NX300, offering unsurpassed engine protection for up to 25,000 miles and 75% more protection against horsepower loss and wear. It is specifically designed to handle the stress of the turbocharged engine while maintaining superior fuel economy and cold-start performance.
- AMSOIL Extended-Life 0W-20 100% Synthetic Motor Oil – An excellent option for those seeking a balance between cost and extended service intervals. This oil provides 20,000 miles of guaranteed protection and offers 37% more cleaning power than the OE series to keep the turbocharger and engine internals running smoothly.
- AMSOIL OE 0W-20 100% Synthetic Motor Oil – Formulated to outperform conventional oils and meet or exceed original equipment manufacturer requirements. This oil is an ideal choice for routine maintenance, offering a robust defense against sludge and deposits without compromising the vehicle’s warranty.
- AMSOIL 0W-20 100% Synthetic High-Mileage Motor Oil – Specifically developed for vehicles with over 75,000 miles, this oil helps restore seals, reduce oil consumption, and lower sludge buildup to keep aging engines performing better.
- AMSOIL Oil Filter – A premium filtration solution that captures 99% of contaminants at 20 microns, offering a lower restriction and greater capacity to hold wear-causing particles compared to standard filters, ensuring your engine oil stays clean longer.
- WIX Oil Filter – A high-quality alternative option featuring premium media that offers improvements over original equipment manufacturer branded filters, providing reliable protection for those who prefer this brand.
- WIX Air Filter – A high-quality alternative option featuring premium media that offers improvements over original equipment manufacturer branded filters, ensuring clean air reaches your turbocharged engine.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique poly-organic acid formulation that provides protection for up to 150,000 miles or 5 years. This ethylene glycol pre-mix is compatible with all cooling system metals and hoses, ensuring your engine stays at the optimal operating temperature.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated option that requires mixing with water, offering extended protection up to 150,000 miles or 5 years. It greatly surpasses corrosion standards and is phosphate-free, making it a robust choice for maintaining cooling system integrity.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Designed to withstand the rigors of towing and elevated temperatures, this fluid remains fluid in sub-zero conditions and provides reserve protection during heavy use, ensuring the U661E and U661F transmissions shift smoothly.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – A cost-effective, fuel-efficient synthetic transmission fluid that protects against wear and helps maintain the longevity of the vehicle’s automatic transmission system.
- AMSOIL SEVERE GEAR® 75W-85 100% Synthetic Gear Lube – Essential for the transfer case and rear differential, this lube controls thermal runaway, protects against rust, and contains friction modifiers for limited-slip applications, ensuring reliable power delivery in all driving conditions.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Provides excellent ABS and traction-control responsiveness with a stable viscosity over a wide temperature range, ensuring precise and safe braking performance for your Lexus NX300.
Maintaining your 2021 Lexus NX300 requires more than just following the standard service intervals; it requires using fluids that can handle the specific demands of its 2.0-liter turbocharged engine. The 8AR-FTS engine code points to a sophisticated powerplant that generates significant heat, particularly around the turbocharger. Standard mineral oils can break down under these conditions, leading to deposit formation that can clog oil passages or degrade the performance of the turbo bearings. AMSOIL synthetic oils are engineered to resist thermal breakdown and coking, protecting the turbocharger and maintaining oil flow even when the engine is subjected to high loads or extreme cold. When you perform an oil change, the capacity for the 2.0L engine is 5.2 quarts including the oil filter. This volume must be respected to ensure proper lubrication without overfilling or underfilling the crankcase.
For those drivers who push their vehicles harder or live in areas with extreme temperature variations, the choice of oil grade is critical. While 0W-20 is the factory specification and the best choice for fuel economy and cold starting, understanding the full spectrum of protection available is vital. The AMSOIL Signature Series motor oil provides the highest level of protection, reducing wear and extending the life of the engine beyond standard industry limits. It allows for extended drain intervals, reducing the frequency of maintenance stops while simultaneously improving the vehicle’s overall efficiency. For the transmission, the NX300 utilizes a 6-speed automatic (U661E for FWD or U661F for AWD). The capacity for a total fill is 7.2 quarts, which is significantly more than a standard top-off. Ensuring the correct automatic transmission fluid is used is crucial for shift quality and longevity, especially as the vehicle ages. The synthetic transmission fluids prevent the fluid from thickening in cold weather or breaking down in the heat generated by city driving and towing.
Beyond the engine and transmission, the cooling system plays a pivotal role in the longevity of the NX300. The 2.0L turbo engine runs at higher temperatures than a naturally aspirated unit, placing additional stress on the radiator, hoses, and AMSOIL Passenger Car & Light Truck Antifreeze & Coolant. An efficient cooling system prevents overheating, which can warp heads and damage gaskets. The AMSOIL Propylene Glycol Antifreeze and Engine Coolant capacity is 8.3 quarts. AMSOIL antifreeze and coolants are formulated to protect against corrosion and rust, ensuring that the metal components within the cooling system remain free from the degradation that leads to leaks and failures. The difference between a standard coolant and a premium synthetic formulation becomes apparent over years of service, as the latter maintains its protective properties and thermal conductivity for much longer periods.
Even the smallest components of your vehicle’s maintenance routine matter. The differential and transfer case in the AWD model require lubrication that can handle the specific gear ratios and friction characteristics of the system. AMSOIL SEVERE GEAR® 75W-85 offers a robust barrier against wear and rust in these areas. Similarly, the braking system relies on DOT 3 or DOT 4 fluid, and using a high-quality synthetic brake fluid ensures consistent pedal feel and prevents moisture absorption, which can lead to brake fade and corrosion in the brake lines. Finally, for vehicle owners who want to keep their Lexus running like new, fuel additives like AMSOIL P.i.® Performance Improver can help clean the fuel injectors, restore horsepower, and improve fuel economy, addressing the carbon buildup that can occur in Direct Injection (GDI) engines common in modern Lexus vehicles.
About the 2021 Lexus NX300
The 2021 Lexus NX300 represents a significant step forward in the brand’s compact luxury crossover lineup. Based on the Lexus NX platform, this vehicle distinguishes itself with a sophisticated blend of luxury, agility, and efficiency. Under the hood, the NX300 is powered by a 2.0-liter four-cylinder turbocharged engine, known internally as the 8AR-FTS. This engine choice was a strategic move by Lexus to provide a more responsive and engaging driving experience compared to the V6 engines found in previous generations or the hybrid-only options in the NX 300h. The turbocharging technology delivers a strong torque curve, allowing the vehicle to accelerate confidently without the weight and complexity of a larger displacement engine.
Entering its third year as a facelifted model, the 2021 NX300 features a redesigned interior and exterior that leans heavily into Lexus’s “L-finesse” design philosophy. The exterior styling is characterized by a bold spindle grille and sharp, angular lines that give the crossover a distinct, aggressive stance on the road. Inside, the cabin is crafted with high-quality materials, offering a quiet and comfortable environment for drivers and passengers alike. The infotainment system, including the optional 10-inch display, provides a modern interface for navigation and connectivity, ensuring that the driver remains in tune with their vehicle and the digital world.
One of the defining characteristics of the NX300 is its versatility. It serves effectively as a daily commuter, a highway cruiser, and a capable companion for light off-road adventures thanks to its available All-Wheel Drive (AWD) system. The AWD system in the NX300 is designed to transfer power seamlessly between the front and rear wheels when traction is compromised, making it a reliable choice for various weather conditions. The vehicle’s suspension tuning strikes a balance between sporty handling and a comfortable ride, absorbing road imperfections while maintaining body control during cornering. This makes it a favorite among owners who want a vehicle that feels as good to drive as it looks to park.
Despite its reputation for reliability, the NX300, like any complex modern machine, can encounter specific issues over time, particularly related to the high-stress components of its turbocharged engine and AWD system. Owners of the NX300 have reported that high-mileage engines, especially those subjected to severe driving conditions, can sometimes suffer from increased oil consumption or sludge buildup due to the heat generated by the turbocharger. Regular use of a high-quality synthetic motor oil, such as the AMSOIL 0W-20 100% Synthetic High-Mileage Motor Oil, can help mitigate these issues by cleaning existing deposits and preventing new ones from forming, ensuring that the oil passages remain clear and the turbocharger bearings stay lubricated.
Another common concern for AWD owners involves the transfer case and rear differential. Over time, the constant cycling of the AWD system can lead to wear in the gears if the lubricant degrades. The use of a dedicated synthetic gear lube like AMSOIL SEVERE GEAR® 75W-85 can significantly extend the service life of these components, reducing noise and preventing the “thermal runaway” that can occur in older differentials. Furthermore, the NX300’s cooling system, critical for the turbo engine, can accumulate corrosion and scale over years of service. A flush with a high-performance antifreeze like AMSOIL Propylene Glycol or the pre-mixed Passenger Car & Light Truck Antifreeze can restore the system’s efficiency and prevent costly repairs related to overheating or component failure.
Finally, the direct injection nature of the 2.0L engine, while efficient, can lead to carbon buildup on the intake valves over time, a condition that can affect performance and fuel economy. Owners who address this proactively with fuel system cleaners and additives can maintain the engine’s peak performance characteristics. By staying vigilant with maintenance and choosing the right lubricants, NX300 owners can avoid these pitfalls and enjoy the smooth, reliable performance that Lexus is famous for, keeping their vehicle running smoothly for tens of thousands of miles.
Whether you are an enthusiast looking to maximize the life of your vehicle or a practical owner who wants to minimize maintenance costs and time, the right lubricants make all the difference. The 2021 Lexus NX300 is a remarkable vehicle that rewards proper care. By utilizing the full range of AMSOIL synthetic lubricants designed for this specific platform, you ensure that every component, from the turbocharger to the brake lines, receives the protection it needs. This commitment to quality maintenance pays off in improved performance, better fuel economy, and a vehicle that stays on the road longer and runs better.