Keeping your 2023 Buick Enclave running smoothly requires more than just showing up to the dealership for scheduled maintenance. It demands precise fluid selection tailored to the demands of its 3.6L V6 engine and advanced transmission systems. Whether you are navigating city traffic, enduring harsh winter conditions, or hauling cargo, the right lubricants provide the necessary protection against wear, sludge, and thermal breakdown. This guide details the optimal AMSOIL products and specifications to ensure your vehicle operates at peak efficiency and longevity.
Recommended AMSOIL Products
- AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil – Offers maximum engine protection with up to 25,000 miles of coverage, featuring 75% more protection against horsepower loss and wear.
- AMSOIL Extended-Life 5W-30 100% Synthetic Motor Oil – Provides 20,000 miles of guaranteed protection with enhanced cleaning power to keep engines running smoother for longer.
- AMSOIL OE 5W-30 100% Synthetic Motor Oil – Designed to outperform conventional oils with a formulation that fights sludge and deposits while meeting strict GM dexos1 Gen 2 specifications.
- AMSOIL 5W-30 100% Synthetic High-Mileage Motor Oil – Specifically formulated for vehicles over 75,000 miles with enhanced detergents to reduce sludge and control oil consumption.
- AMSOIL Oil Filter – Delivers 99% filtering efficiency at 20 microns with greater capacity for contaminants to reduce engine wear.
- WIX XP Oil Filter – Premium filtration media that offers superior improvements over standard OEM-branded filters for critical engine protection.
- WIX Oil Filter – A reliable OEM-style filtration option that effectively traps wear-causing particles to extend engine life.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A ready-to-use 50/50 pre-mix that protects cooling system metals, gaskets, and hoses for up to 150,000 miles.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated option for long-life protection, surpassing OEM standards for corrosion resistance in severe conditions.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Withstands heavy towing and high temperatures while maintaining fluidity in sub-zero conditions for the 9-speed transmission.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Provides essential wear protection and fuel economy benefits for the 9T65 9-speed automatic transmission.
- AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube – Controls thermal runaway and rust in the rear differential while offering friction modifiers for limited-slip applications.
- AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid – Reduces friction and prevents leaks by keeping seals soft, ensuring quiet operation in extreme temperatures.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Ensures stable viscosity across a wide temperature range for responsive braking and ABS performance.
Selecting the correct viscosity and specification is critical for the 3.6L engine (Engine Code [W] LFY W). This powerplant is a direct-injection V6 that operates under significant thermal stress. Using an oil that cannot withstand high temperatures or that lacks the proper additive package for modern turbocharged or direct-injection engines can lead to premature wear, sludge buildup, and reduced fuel economy. The AMSOIL Signature Series lineup addresses these specific challenges by providing superior thermal stability and oxidation resistance.
When performing an oil change, the system requires a total capacity of 6.0 quarts when replacing the AMSOIL Oil Filter. It is essential to refill the system to this volume and then check the oil level after the refill to ensure accuracy. The oil drain plug torque specification is 18 ft/lbs, and replacing the drain plug seal is recommended during every service to prevent leaks. For those with high-mileage vehicles exceeding 75,000 miles, the specialized High-Mileage Motor Oil helps revitalize seals and reduce consumption, making it a vital upgrade for older Enclaves.
The cooling system also demands attention to detail to maintain engine longevity. The total capacity for the cooling system is approximately 15.4 quarts with the heater core (OT15) or 15.5 quarts with the transfer tube (TT15). AMSOIL Passenger Car & Light Truck Antifreeze & Coolant is a ready-to-use pre-mix that protects cooling system metals, gaskets, and hoses for up to 150,000 miles. AMSOIL antifreeze solutions are formulated to be compatible with all other coolant colors and free from silicates, borates, phosphates, and nitrates, preventing the formation of sludge that can clog narrow AMSOIL Propylene Glycol Antifreeze passages. This protection is guaranteed for 150,000 miles or five years, whichever comes first.
Transmission and Drivetrain Protection
The 2023 Buick Enclave is equipped with a 9T65 9-speed automatic transmission. Proper lubrication here is paramount for smooth shifting and to prevent the costly repairs associated with transmission failure. The total fill capacity for the 9T65 transmission is 10 quarts, though the initial fill capacity is approximately 5.3 quarts. Actual capacity can vary between 5.0 and 6.0 liters depending on the specific service procedure. AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid are engineered to handle the rigors of heavy towing and elevated temperatures, ensuring that the fluid remains stable and effective even under severe service conditions.
For the drivetrain, the rear differential and transfer case require specific gear lubes. The rear differential typically requires a capacity of 1.7 pints of AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube, while the transfer case and clutch lubricants have smaller capacities around 0.8 pints. Using a synthetic gear lube like SEVERE GEAR helps control thermal runaway, a common issue in heavy-duty applications, and reduces operating temperatures. This not only extends the life of the gears and bearings but also improves fuel efficiency by reducing drag within the drivetrain components.
Brake safety is another critical aspect of vehicle maintenance. The 2023 Buick Enclave utilizes DOT 4 hydraulic AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid. AMSOIL DOT 3 and DOT 4 synthetic brake fluid provides excellent responsiveness for both ABS and traction control systems. Its stable viscosity over a wide temperature range ensures consistent pedal feel, preventing the spongy brake feel that can occur with conventional fluids when they boil or thicken in extreme weather.
Vehicle Background
The 2023 Buick Enclave represents the fourth generation of GM’s flagship crossover SUV. Built on the Chevrolet T1 platform, it shares its mechanical underpinnings with siblings like the Chevrolet Traverse and Cadillac XT6, but it distinguishes itself with a premium interior and a refined driving character. Enclave owners often appreciate the spacious interior, which comfortably accommodates three rows of passengers, and its robust towing capabilities, making it a favorite for family road trips and active lifestyles.
Under the hood, the 3.6L V6 engine is a powerhouse, delivering strong acceleration and a smooth power delivery that suits the vehicle’s size. The engine is paired with a sophisticated 9-speed automatic transmission that shifts quickly and efficiently, optimizing fuel economy in daily driving while providing sufficient power for merging and overtaking. The vehicle’s design philosophy focuses on comfort, utilizing advanced noise-canceling technologies and a suspension tuned to absorb road imperfections, resulting in a quiet and composed ride. As a mid-size luxury crossover, the Enclave occupies a unique space in the market, offering the utility of an SUV with the sophistication expected of a Buick. Whether used for commuting or as a primary family vehicle, maintaining this machine with high-quality fluids ensures it remains a reliable and luxurious mode of transport for years to come.
Seasonal and Additional Maintenance
For owners who store their vehicles during off-seasons or for those interested in maximizing performance, AMSOIL offers a range of additives and stabilizers. AMSOIL Gasoline Stabilizer helps keep fuel fresh for up to 12 months, protecting against varnish and gum buildup caused by ethanol corrosion. For engines that will sit for extended periods, AMSOIL Engine Fogging Oil provides a protective coating on internal components to prevent rust and corrosion. Additionally, AMSOIL P.i.® Performance Improver can restore up to 14% horsepower and clean GDI fuel injectors to 100% flow rate after a single tank, helping to maintain fuel economy and engine performance.
For vehicle appearance and protection, the AMSOIL lineup includes exterior and interior cleaners. The AMSOIL Miracle Wash Waterless Wash and Wax Spray requires just two steps and leaves a protective finish against UV rays, while the AMSOIL Exterior Ceramic Spray provides rapid water shedding and UV protection. Inside, the AMSOIL Interior Detailer – Light Lemon and AMSOIL Interior Detailer – Scent Free offer 90-day UV protection and trap odors, keeping the cabin fresh. These products, along with AMSOIL Synthetic Multi-Purpose Grease, AMSOIL Heavy-Duty Metal Protector, and AMSOIL Heavy-Duty Degreaser, ensure that the 2023 Buick Enclave looks and performs its best in every season.