Maintaining the 2022 Chevrolet Suburban with its robust 5.3L V8 engine requires a diligent approach to fluid maintenance. This full-size SUV, powered by the L84 engine code, is designed for serious towing and hauling, placing significant demands on its internal components. Proper lubrication ensures that the engine, transmission, and drivetrain operate within their specified parameters, protecting against the wear and heat generated during heavy use. Using the correct viscosity and specification is critical for longevity and performance.
Recommended AMSOIL Products
- AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil – The premier choice for maximum engine protection, offering up to 25,000 miles of service life. It delivers superior wear resistance and thermal stability compared to conventional oils.
- AMSOIL Extended-Life 0W-20 100% Synthetic Motor Oil – An excellent option for up to 20,000 miles between changes, featuring enhanced cleaning power to keep the engine running smoother for longer.
- AMSOIL OE 0W-20 100% Synthetic Motor Oil – Formulated to exceed GM dexos1 Gen 3 specifications, this oil fights sludge and deposits effectively while providing guaranteed protection for up to 12,000 miles.
- AMSOIL 0W-20 100% Synthetic High-Mileage Motor Oil – Designed specifically for vehicles with over 75,000 miles, featuring boosted detergents and additives to reduce sludge and prevent leaks.
- AMSOIL Oil Filter – Delivers 99% filtration efficiency at 20 microns, allowing for lower restriction and helping to reduce engine wear by capturing small contaminants effectively.
- WIX XP Oil Filter – Premium media offers improvements over original equipment manufacturer (OEM)-branded filters for maximum reliability.
- WIX Oil Filter – A reliable choice for standard service intervals, ensuring efficient flow and protection.
- AMSOIL Signature Series ULV 100% Synthetic Automatic Transmission Fluid – Withstands the rigors of heavy towing and elevated temperatures, ensuring the 10L80 transmission remains fluid in sub-zero conditions.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Designed to enhance fuel economy while providing robust protection for automatic transmissions.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – A fuel-efficient option that meets or exceeds OEM requirements for automatic transmissions.
- AMSOIL SEVERE GEAR® 75W-85 100% Synthetic Gear Lube – Provides advanced protection against wear and thermal runaway for both front and rear differentials, as well as the transfer case.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Delivers excellent ABS and traction-control responsiveness with a stable viscosity over a wide temperature range.
The engine in your Suburban requires specific attention due to the shift in specifications. The L84 engine is updated to use GM Dexos 1 Gen 3, moving away from the previous Gen 2 standards. This change highlights the need for oils that meet these stricter requirements to prevent issues like low-speed pre-ignition (LSPI) and to maintain turbocharger health. The oil capacity for this engine, when including a filter change, is 8.0 quarts. It is crucial to adhere to this capacity and to torque the drain plug to the specified 18 ft/lbs after refilling. Checking the oil level after the refill is a standard best practice to ensure optimal lubrication coverage.
Proper cooling system maintenance is equally vital for a vehicle of this size. The 2022 Suburban’s cooling system holds 15.6 quarts of antifreeze. AMSOIL offers the Passenger Car & Light Truck Antifreeze & Coolant, a unique poly-organic acid (OAT) formulation that is compatible with all vehicle cooling systems. It provides protection up to 150,000 miles or five years, safeguarding metals, gaskets, and hoses against corrosion. For those who prefer a concentrated solution, the Propylene Glycol Antifreeze and Engine Coolant offers even longer protection, up to 1,000,000 miles in heavy-duty applications or five years in passenger cars.
Drivetrain and Transmission Protection
The 10-speed automatic transmission in the Suburban is a sophisticated component designed for efficiency and power delivery. Whether equipped with the 10L80 or the 10L80/MHS variant, the transmission requires a fluid capable of handling the torque of the 5.3L engine. The total fill capacity can range from 11.5 quarts without a cooler to 12 quarts with a cooler, with an initial fill of 8.1 quarts. AMSOIL Signature Series ULV is recommended to withstand the heavy loads, towing, and extreme temperatures associated with Suburban ownership. It remains fluid in cold weather while offering reserve protection during abuse.
For transfer case and differential applications, the vehicle requires specific gear lubricants. The transfer case (MP3015, 25, AF6) requires 3.2 pints, and the drain and fill plugs must be torqued to 15 ft/lbs. Applying a high-performance thread sealant before installation is a critical step to prevent leaks. The front differential (GLSH5) holds 2.3 pints, while rear differentials with G96 or G86 lockers hold 3.2 pints each. AMSOIL SEVERE GEAR® 75W-85 is ideal for these components, containing friction modifiers for limited-slip applications and helping to reduce operating temperatures and rust.
Additional Fluids and Maintenance
Brake fluid is a safety-critical fluid that is often overlooked. For the HBH system, AMSOIL DOT 3 and DOT 4 Synthetic Brake Fluid is recommended. It ensures stable viscosity and excellent responsiveness for anti-lock braking systems and traction control. Regularly flushing and replacing brake fluid with a synthetic compound prevents moisture absorption, which can lead to corrosion and a spongy brake pedal.
Fuel system health is paramount for the direct injection engine found in the L84. Carbon buildup on fuel injectors can degrade performance and fuel economy. AMSOIL P.i.® Performance Improver gasoline additive can help restore fuel injectors to 100% flow rate after a single tank, restoring up to 14% of horsepower. This additive is compatible with capless fuel systems and helps control pre-ignition knock, ensuring the engine runs smoothly and efficiently.
Vehicle Background
The 2022 Chevrolet Suburban stands as a titan among full-size SUVs, continuing a legacy that spans over 80 years. Based on the GMT T1XX platform, it shares its roots with the massive Silverado pickup truck, offering a blend of rugged utility and substantial interior space. The model is a favorite for large families, government fleets, and enthusiasts who require maximum cargo and passenger capacity without the bulk of a commercial van. The 5.3L V8 engine, part of the General Motors High Feature V6/V8 engine family, delivers a balance of power and efficiency suitable for both daily commuting and demanding work applications.
Owners of the Suburban often appreciate the vehicle’s sheer presence on the road and its versatile utility. The interior can accommodate up to nine passengers, making it one of the few vehicles capable of moving a large group comfortably. For those who tow, the 2022 Suburban offers impressive towing capacity, often exceeding 8,000 pounds when properly equipped. This capability relies heavily on the durability of the drivetrain components, including the heavy-duty 10-speed automatic transmission and the robust frame construction.
While the Suburban is a highly capable machine, owners should be aware of specific issues that can arise as the vehicle accumulates miles. One common concern involves oil consumption, particularly in earlier iterations of the Ecotec 5.3L engines, where piston ring design could lead to increased oil usage over time. Using high-quality synthetic motor oil with robust additive packages can help mitigate this issue and maintain optimal compression. Another area of concern is the 10-speed automatic transmission, which can sometimes exhibit harsh shifting or “shudder” if the fluid becomes degraded or contaminated. Regular fluid exchanges using a fluid designed for the specific 10L80 or 10L80/MHS specifications can prevent these transmission concerns and ensure smooth power delivery. Additionally, some owners have reported issues with the Active Fuel Management system, which can cause engine vibration or noise during mode transitions. Synthetic oils formulated to prevent sludge and maintain clear oil passages can support the system’s operation. Finally, the cooling system on these large engines is under constant stress during towing. Overheating can be a significant problem if the coolant loses its protective properties or if the system develops leaks. High-performance antifreeze that resists corrosion and maintains proper boiling points is essential to keeping the engine temperature in check during extended periods of heavy load.