To ensure your 2022 Lexus RX350 receives the best possible care, we have compiled a list of the top AMSOIL lubricants and additives specifically suited for this vehicle’s specifications. These products are designed to exceed manufacturer requirements and offer extended protection for both the engine and drivetrain.
- AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil – The ultimate choice for engine protection, offering 75% more resistance against horsepower loss and wear while extending service intervals up to 25,000 miles.
- AMSOIL Extended-Life 0W-20 100% Synthetic Motor Oil – Provides 37% more cleaning power to keep the engine running smoother, with guaranteed protection for up to 20,000 miles.
- AMSOIL OE 0W-20 100% Synthetic Motor Oil – A cost-effective 100% synthetic option that fights sludge and deposits effectively, maintaining performance comparable to standard OEM oils.
- AMSOIL 0W-20 100% Synthetic High-Mileage Motor Oil – Formulated uniquely for vehicles with over 75,000 miles, featuring boosted detergents and reduced sludge by 67%.
- AMSOIL Oil Filter EA15K02 – Delivers filtering efficiency of 99% at 20 microns, allowing for lower restriction and keeping engine parts properly lubricated while extending service life.
- WIX Oil Filter 57047 – Features premium media that offers significant improvements over original equipment manufacturer-branded filters for reliable oil filtration.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Withstands heavy towing, elevated temperatures, and challenging terrain while remaining fluid in sub-zero conditions.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Provides reliable protection against wear for the U881E and U881F 8-speed automatic transmissions.
- AMSOIL SEVERE GEAR® 75W-85 100% Synthetic Gear Lube – Ideal for the differential and transfer case, offering advanced wear protection and controlling thermal runaway.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Ensures excellent ABS and traction-control responsiveness with stable viscosity across a wide temperature range.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique poly-organic acid formulation that protects the cooling system for up to 150,000 miles or 5 years.
One of the most critical aspects of maintaining the 2022 Lexus RX350 is adhering to the correct oil viscosity and change intervals. The manufacturer specifies 0W-20 viscosity for optimal fuel economy and cold-weather starting. With the engine oil capacity listed at 5.8 quarts (including a filter change), selecting the right volume and quality of oil is paramount. AMSOIL motor oils are engineered to exceed the requirements of the 2GR-FKS engine, providing superior resistance to oxidation and thermal breakdown compared to conventional oils.
Engine Oil and Filtration
The heart of your Lexus is its 3.5-liter V6 engine, which generates significant power but also operates under high thermal loads. Regular oil changes are vital to prevent the accumulation of sludge and deposits that can starve the engine of lubrication. The AMSOIL Signature Series 0W-20 is the premium choice for those seeking maximum protection, while the Extended-Life option offers a robust alternative with extended drain intervals. For owners looking for a value-oriented approach, the OE formulation provides the same 100% synthetic benefits at a more accessible price point.
Filtration is equally important. The AMSOIL Oil Filter (EA15K02) is designed to trap 99% of contaminants at 20 microns, ensuring that the oil circulating through the engine remains clean. This higher efficiency helps reduce engine wear and extends the life of the internal components. Alternatively, the WIX Oil Filter (57047) serves as a high-quality OEM replacement, offering premium media that outperforms standard factory filters.
Transmission and Drivetrain Care
The 2022 RX350 utilizes an 8-speed automatic transmission (U881E for FWD and U881F for AWD) that requires precise fluid properties to shift smoothly. The total fill capacity is 7.2 quarts for a complete transmission service. Using AMSOIL’s Fuel-Efficient Automatic Transmission Fluid helps reduce drag within the transmission, potentially improving fuel economy while protecting against wear caused by heavy towing or hot climates. The fluid remains stable even under extreme temperature variations.
For models equipped with all-wheel drive, the transfer case also requires specific attention. The transfer case capacity is relatively small at 1.7 pints, making the use of high-quality gear lube essential. AMSOIL SEVERE GEAR 75W-85 is an excellent choice here, as it protects against rust, corrosion, and thermal runaway, ensuring the transfer case operates quietly and reliably. Similarly, the rear differential, which holds 1.1 pints, benefits from the same synthetic gear lube to minimize friction and wear.
Cooling and Brake Systems
Proper cooling is essential for the longevity of the V6 engine. The cooling system capacity varies slightly depending on the specific equipment configuration, ranging from 9.5 to 10.5 quarts. AMSOIL Antifreeze & Coolant formulations are designed to exceed OEM requirements, providing protection for up to 150,000 miles or 5 years. The phosphate-free, silicate-free formula is safe for all cooling system metals, gaskets, and hoses, preventing corrosion that can lead to costly repairs.
Brake safety cannot be overlooked. The hydraulic brake system in the RX350 performs best with AMSOIL DOT 3 and DOT 4 Synthetic Brake Fluid. This fluid provides excellent responsiveness for ABS and traction control systems and maintains stable viscosity regardless of ambient temperature, ensuring consistent braking performance in all weather conditions.
Additional Maintenance Products
For owners who wish to maximize engine performance and fuel economy, AMSOIL P.i. Performance Improver is a powerful gasoline additive that can restore up to 14% horsepower and clean fuel injectors. Additionally, seasonal storage requires preparation to prevent fuel degradation; AMSOIL Gasoline Stabilizer can keep fuel fresh for up to 12 months, making it ideal for vehicles that are parked for extended periods.
Vehicles Background and History
The 2022 Lexus RX350 represents the culmination of over two decades of refinement in the midsize luxury crossover segment. Originally introduced as a luxury alternative to standard Japanese SUVs, the RX quickly established itself as a best-selling vehicle, blending the ride comfort of a sedan with the utility of an SUV. The 2022 model, part of the fifth generation of the RX series, continues this legacy with a focus on advanced safety features, premium interior appointments, and a refined driving dynamic that appeals to families and professionals alike.
Powered by the 2GR-FKS 3.5-liter V6 engine, the RX350 delivers a robust 295 horsepower, providing confident acceleration and towing capability when needed. This engine is part of Toyota’s widely respected “TNGA” (Toyota New Global Architecture) platform, which has improved handling characteristics and chassis rigidity compared to previous generations. Owners appreciate the RX350 for its exceptionally smooth power delivery, quiet cabin environment, and high resale value. It serves as a primary family vehicle for many, prized for its reliability and the ease of ownership it offers.
However, like any vehicle with high mileage, the RX350 is susceptible to certain common issues that can be mitigated through proactive maintenance. One prevalent concern is engine sludge buildup, which can occur if conventional oil is used or if drain intervals are extended beyond recommended limits. This can restrict oil flow and lead to premature engine wear. Using a high-quality synthetic oil like AMSOIL helps break down deposits and keeps the engine internally clean, preventing sludge-related failures.
Another common problem involves the transmission shifting roughness or hesitation, often attributed to degraded automatic transmission fluid over time. As the fluid breaks down, it loses its friction modifiers and protective properties, leading to clunky shifts or increased wear. Regular fluid exchanges with a synthetic transmission fluid can restore smooth operation and extend the life of the 8-speed automatic unit.
Owners of older RX350 models may also experience coolant leaks or cooling system corrosion, particularly around the water pump or thermostat housing. This can be exacerbated by the use of lower-quality coolants that do not adequately protect the various metals and rubber components in the cooling loop. A dedicated antifreeze formulation designed for extended protection helps prevent corrosion and seal leaks.
Finally, brake fluid contamination with moisture is a silent issue that affects braking performance and can lead to ABS sensor failure. Over time, DOT 3 fluid absorbs water from the air, lowering its boiling point. Regular flushing with synthetic brake fluid ensures that the braking system remains responsive and free from corrosion, maintaining the safety of the vehicle. Addressing these specific vulnerabilities with premium lubricants ensures that the 2022 Lexus RX350 remains a reliable and comfortable companion for years to come.