The 2022 Subaru OUTBACK with the 2.4L turbocharged FA24 engine represents a significant step forward for Subaru’s utility vehicles, combining rugged all-weather capability with a responsive and powerful powertrain. To maintain the integrity of this sophisticated engine and drivetrain, selecting the correct lubricants is not merely a maintenance task but a critical component of ownership. This vehicle requires synthetic oils that can withstand the high thermal loads generated by turbocharging while providing the precise viscosity needed for optimal fuel economy and engine longevity. Using the recommended AMSOIL Signature Series formulations ensures that every moving part from the turbocharger to the differential operates within its ideal parameters, protecting against the specific wear patterns associated with Subaru’s flat-four configuration and turbocharged operation.
Recommended AMSOIL Products
- AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil – The ultimate protection for the FA24 turbo engine, offering up to 25,000 miles of service and superior resistance to heat-induced horsepower loss.
- AMSOIL Extended-Life 0W-20 100% Synthetic Motor Oil – Provides extended service intervals of up to 20,000 miles with enhanced cleaning power to keep the direct injection system free of deposits.
- AMSOIL OE 0W-20 100% Synthetic Motor Oil – An outstanding OEM-mileage oil that protects turbochargers and fights sludge, offering a balanced choice for standard maintenance schedules.
- AMSOIL 0W-20 100% Synthetic High-Mileage Motor Oil – Specifically formulated for vehicles over 75,000 miles to reduce sludge, protect seals, and maintain viscosity control in high-mileage engines.
- AMSOIL Oil Filter – Designed with 99% filtering efficiency at 20 microns to capture wear-causing contaminants and reduce engine restriction for optimal oil flow.
- WIX Oil Filter – A premium aftermarket alternative that offers improved filtration performance over standard OEM filters.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A pre-mixed, phosphate and silicate-free coolant that protects all cooling system metals for up to 150,000 miles.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A non-toxic, concentrated coolant requiring mixing with water, designed for superior corrosion protection and long life.
- AMSOIL 100% Synthetic CVT Fluid – Provides exceptional frictional properties for Subaru’s CVT transmission, ensuring smooth shifts and reduced wear on pulley surfaces.
- AMSOIL SEVERE GEAR® 80W-90 100% Synthetic Gear Lube – Ideal for rear differentials requiring GL-5 lubricants, offering advanced wear protection and thermal stability.
- AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube – A high-performance gear lube suitable for a wide range of temperatures and demanding operating conditions.
- AMSOIL SEVERE GEAR® 75W-110 100% Synthetic Gear Lube – A heavy-duty option for limited-slip applications where high viscosity is needed to maintain a protective film under load.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – A high-boiling-point fluid that provides consistent pedal feel and superior resistance to moisture absorption.
Engine Oil and Filtration for the FA24 Turbo Engine
The heart of the 2022 Subaru OUTBACK with the 2.4L FA24 engine is a turbocharged flat-four that operates under significantly different conditions than the naturally aspirated engines of previous generations. The high thermal and mechanical stresses imposed by the turbocharger demand a lubricant that maintains viscosity stability even when the engine is subjected to the extreme heat of boost. AMSOIL Signature Series 0W-20 is engineered specifically to address these challenges. It offers 75% more engine protection against horsepower loss and wear compared to conventional standards, ensuring that the turbocharger bearings and piston rings remain protected during aggressive driving or steep mountain climbs.
When it comes to the oil filter, the standard OEM unit is replaced by the AMSOIL Oil Filter (EA15K13-EA). This filter is designed with a unique media that achieves 99% filtration efficiency at 20 microns. For an engine with a turbocharger, where microscopic metal particles can be accelerated through the system, this level of filtration is crucial. The filter also offers lower restriction compared to many competitors, ensuring that oil circulates rapidly to critical components like the timing chain and turbo bearings. For those preferring a premium aftermarket option, the WIX Oil Filter is also a suitable alternative, offering improvements over original equipment manufacturer branded filters.
Transmission and Drivetrain Lubrication
Subaru vehicles are renowned for their symmetrical all-wheel-drive systems, which place unique demands on the transmission and differential components. The 2022 OUTBACK utilizes a Continuously Variable Transmission (CVT) that benefits immensely from a dedicated synthetic fluid. The AMSOIL 100% Synthetic CVT Fluid (CVTQT) is formulated to provide exceptional metal-to-metal frictional properties, which are essential for the steel belt and pulley system found in Subaru CVTs. Using this fluid helps to reduce heat and wear, ensuring smooth, hesitation-free acceleration across the entire speed range.
The differential and transfer case also require specialized attention. The rear differential requires a specific GL-5 AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube. For applications where temperatures drop significantly or the vehicle is used for towing and hauling, AMSOIL SEVERE GEAR® 80W-90 or 75W-110 offers superior protection. These lubricants control thermal runaway and protect against rust and corrosion, extending the life of the gears. The 80W-90 variant is also available for specific capacity and viscosity requirements. With a rear differential capacity of just 1.7 pints, using the correct fluid ensures that the limited-slip mechanisms (if equipped) engage properly and that the gears operate quietly under load.
Cooling Systems and Brake Fluids
Maintaining the correct coolant mixture is vital for a turbocharged engine, as the cooling system must dissipate the significant heat generated by the engine block and the turbo. The AMSOIL Passenger Car & Light Truck Antifreeze & Coolant (ANTPC) is a 50/50 pre-mix that is phosphate, nitrate, nitrite, silicate, borate, and amine-free. This unique OAT formulation is compatible with all cooling system metals, gaskets, and hoses, providing protection for up to 150,000 miles or 5 years. For those who prefer to mix their own, the AMSOIL Propylene Glycol Antifreeze and Engine Coolant is a concentrated, non-toxic option that meets or exceeds OEM requirements for corrosion and erosion protection.
Brake safety is paramount, especially when operating a heavy vehicle like the OUTBACK in various weather conditions. The AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid offers excellent responsiveness for ABS and traction-control systems. Unlike conventional mineral-based fluids, this synthetic fluid maintains a stable viscosity over a wide temperature range and resists boiling at higher temperatures, preventing brake fade during hard stops or repeated use on mountain descents.
Additional Protective Products
To complete the maintenance regimen, several additional products can enhance the longevity and performance of the 2022 OUTBACK. The AMSOIL P.i.® Performance Improver Gasoline Additive is highly recommended for the direct injection system found in the FA24 engine. It helps restore lost horsepower and cleans injectors, ensuring optimal fuel atomization. For storage periods or seasonal use, the AMSOIL Gasoline Stabilizer keeps fuel fresh for up to 12 months, preventing varnish and gum buildup that can clog fuel systems.
For cleaning and maintenance, the AMSOIL Engine Degreaser is a professional-strength formula that removes the toughest grease and grime from engine surfaces without harsh chemicals. When winter roads are treated with salt, the AMSOIL Heavy-Duty Metal Protector can be applied to the undercarriage to prevent rust and corrosion. These products, combined with the core lubricants, create a comprehensive defense system for the vehicle.
Vehicle Background and Owner Experience
The Subaru OUTBACK has long held a unique position in the automotive market, bridging the gap between a traditional sedan and a rugged off-road vehicle. Since its introduction, the model has been celebrated for its practicality, allowing owners to carry cargo or passengers with ease while maintaining car-like handling dynamics. The 2022 model continues this legacy, particularly with the addition of the 2.4-liter turbocharged engine. This engine update brought a significant increase in power and torque, transforming the OUTBACK into a much more dynamic performer for highway passing and hauling heavy loads without sacrificing the fuel efficiency that many owners appreciate.
Commonly known for its standard all-wheel-drive system, the OUTBACK is often the vehicle of choice for drivers who live in regions with harsh winters or rough terrain. The 2022 iteration, with its increased ground clearance and robust suspension tuning, is particularly adept at handling snow, mud, and gravel roads. It appeals to outdoor enthusiasts who need a reliable daily driver that can transition seamlessly from a commute to a trailhead. The interior of the 2022 model has also received updates, offering improved infotainment and driver-assist features that enhance safety and convenience.
Despite its robust design, owners of the 2022 Subaru OUTBACK with the 2.4L turbo engine can face specific challenges that regular maintenance helps mitigate. One common issue is the accumulation of carbon deposits on the intake valves, a known characteristic of direct injection engines. Using a high-quality fuel injector cleaner like the AMSOIL P.i.® Performance Improver can help restore injector flow and prevent these deposits from affecting performance. Another potential concern for turbocharged engines is the degradation of oil viscosity due to high operating temperatures; the use of AMSOIL Signature Series 0W-20 synthetic motor oil provides a thermal buffer that prevents oil breakdown and protects the turbocharger bearings from premature wear.
Additionally, some owners of Subaru CVT vehicles have reported issues with shudder or hesitation, often linked to fluid degradation over time. Regular fluid exchanges with a premium synthetic AMSOIL 100% Synthetic CVT Fluid can significantly reduce these symptoms and extend the life of the transmission. Finally, the vehicle’s all-weather nature means it is frequently exposed to road salt and moisture, which can accelerate undercarriage corrosion. Applying a dedicated metal protector like the AMSOIL MP Metal Protector annually can preserve the structural integrity of the chassis and suspension components, ensuring that the OUTBACK remains a reliable companion for years to come.