For the 2014 Subaru Impreza, selecting the right viscosity and formulation is critical. The engine requires a 0W-20 synthetic oil to ensure optimal flow during cold starts and stability at operating temperatures. Below are the top-tier AMSOIL products specifically suited for this vehicle’s engine and drivetrain specifications.
- AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil – This is the premier choice for maximum engine protection, offering up to 25,000 miles of protection and 75% more resistance to horsepower loss and wear compared to industry standards.
- AMSOIL Extended-Life 0W-20 100% Synthetic Motor Oil – A versatile option providing 20,000 miles of protection with enhanced cleaning power to keep the engine running smoother for longer intervals between changes.
- AMSOIL OE 0W-20 100% Synthetic Motor Oil – Formulated to outperform conventional oils and meet OEM mileage requirements while offering synthetic benefits like turbocharger protection and sludge prevention.
- AMSOIL 0W-20 100% Synthetic High-Mileage Motor Oil – Designed specifically for vehicles with over 75,000 miles, featuring boosted detergents and reduced sludge to help older engines perform better.
- AMSOIL Oil Filter – Provides 99% filtration efficiency at 20 microns and a larger capacity for contaminants compared to competitors, ensuring reduced engine wear and extended service life.
- WIX Oil Filter – A premium alternative option featuring media that offers improvements over original equipment manufacturer-branded filters.
Engine Fluid Capacities and Specifications
When performing maintenance on the 2014 Subaru Impreza 2.0L FB20 engine, it is crucial to adhere to the specific fluid capacities to ensure proper lubrication. The engine oil capacity is 5.1 quarts when including a filter change. It is important to note that synthetic oil is required for this engine. After refilling, owners should always check the oil level to confirm the correct volume is present. The torque specification for the oil drain plug is 31.0 ft/lbs, and a new washer should always be installed on the drain bolt to prevent leaks.
Transmission fluids are equally vital for the longevity of the vehicle’s drivetrain. For models equipped with the TR580 automatic transmission, the total fill capacity is 13.1 quarts. Using the correct fluid here prevents sludge buildup and protects against temperature-related issues that can lead to costly repairs. If the vehicle features a manual transmission, specifically the TY758 model requiring GL-5 lubricant at all temperatures (75W-90), the capacity is 7.4 pints. The drain plug torque for manual transmissions varies by specific configuration, ranging from 32.5 to 51.6 ft/lbs, and a new washer is required for the drain bolt during service.
Cooling and Differential Protection
AMSOIL Passenger Car & Light Truck Antifreeze & Coolant capacity varies depending on the transmission type. For vehicles with the CVT8 transmission, the cooling system capacity is 8.7 quarts, while models with the MTXL transmission require 8.2 quarts. Maintaining the cooling system is critical, as AMSOIL antifreeze formulations are engineered to exceed original equipment manufacturer requirements, offering protection up to 150,000 miles or 5 years. These fluids are phosphate, nitrate, and silicate-free, compatible with all cooling system metals, gaskets, and hoses. Alternatively, the
AMSOIL Propylene Glycol Antifreeze and Engine Coolant is available for concentrated mixing.
The differential and transfer case also require specialized lubrication to handle the all-wheel-drive torque distribution. The front differential typically requires 3 pints of GL-5 gear lube, while the rear differential holds approximately 1.7 pints. For these components, AMSOIL SEVERE GEAR 75W-90 synthetic gear lube provides advanced protection against wear and rust. The 75W-90 formulation contains friction modifiers suitable for limited-slip applications, helping to control thermal runaway and reduce operating temperatures. Alternative viscosities like the AMSOIL SEVERE GEAR 75W-110 100% Synthetic Gear Lube or AMSOIL SEVERE GEAR 80W-90 100% Synthetic Gear Lube are also available depending on specific driving conditions and component requirements.
Brake Fluid and Additives
Brake fluid plays a significant role in the safety of the vehicle, especially given the Subaru’s reputation for all-weather driving. The recommended hydraulic brake fluid is a DOT 3 specification. AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid offers excellent responsiveness for ABS and traction control systems while maintaining stable viscosity across a wide temperature range.
For owners looking to enhance fuel system performance, AMSOIL P.i.® Performance Improver Gasoline Additive is highly recommended. This additive helps restore up to 14% horsepower and can clean GDI fuel injectors back to 100% flow rate after a single tank of treated fuel. It also helps control pre-ignition knock and reduces the need for higher-octane fuel, making it a valuable addition for maintaining the efficiency of the FB20 engine over time.
About the 2014 Subaru Impreza
The 2014 Subaru Impreza continues the legacy of this compact vehicle as a go-to choice for drivers who value all-weather capability and fuel efficiency. Powered by the FB20 2.0-liter flat-four engine, this model introduced improvements in fuel economy and emissions over its predecessors while retaining the boxer engine layout that keeps the center of gravity low for improved handling. The platform is known for its durability and is often favored by owners in regions with harsh winters or unpredictable road conditions due to the standard all-wheel-drive system.
Owners of the 2014 Impreza appreciate its balanced driving character, which combines the comfort of a sedan with the utility of a hatchback in certain trims. The vehicle’s compact footprint makes it easy to maneuver in urban environments, yet it remains spacious enough for daily commutes and family use. Over the years, the Impreza has built a reputation for safety and reliability, with many models remaining on the road well past their original warranty period. This longevity is often attributed to the robust engineering of the drivetrain and the simplicity of the mechanical design, which is well-suited for owners who prioritize preventative maintenance and synthetic fluid use to maximize the vehicle’s lifespan.