Ensuring your 2008 Lexus GX470 receives the proper lubrication is essential for maintaining its legendary reliability and performance. This vehicle, equipped with the robust 4.7-liter 8-cylinder engine (code 2UZ-FE), relies on precise fluid specifications to handle its weight, potential towing duties, and long-term durability requirements. Using the correct viscosity and high-quality synthetic additives helps prevent wear, reduces operating temperatures, and extends the service life of critical components like the engine, transmission, and differentials.
Recommended AMSOIL Products
- AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil – The top-tier choice offering unsurpassed engine protection, allowing for extended drain intervals up to 25,000 miles while providing superior horsepower retention and wear resistance.
- AMSOIL Extended-Life 5W-30 100% Synthetic Motor Oil – An excellent option providing up to 20,000 miles of protection with 37% more cleaning power to keep the engine running smoothly.
- AMSOIL OE 5W-30 100% Synthetic Motor Oil – Formulated to outperform conventional oils and meet original equipment manufacturer requirements, featuring a 100% synthetic formulation to fight sludge and deposits.
- AMSOIL 5W-30 100% Synthetic High-Mileage Motor Oil – Specifically designed for engines with over 75,000 miles, featuring boosted detergents and enhanced anti-wear additives to reduce sludge and control oil consumption.
- AMSOIL Oil Filter – Provides 99% filtering efficiency at 20 microns with greater capacity for contaminants and lower restriction to ensure optimal lubrication of engine parts.
- WIX Oil Filter – A high-quality alternative offering premium media that improves upon original equipment manufacturer-branded filters.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique poly-organic acid formulation engineered to exceed OEM requirements and provide protection for up to 150,000 miles.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated formula that greatly surpasses standards for metallic corrosion and erosion protection.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Withstands the rigors of heavy towing, elevated temperatures, and challenging terrain while remaining fluid in sub-zero conditions.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Protects against wear and promotes smooth, shudder-free shifts.
- AMSOIL SEVERE GEAR® 75W-90 100% Synthetic Gear Lube – Ideal for the transfer case and differentials, offering advanced protection against wear and thermal runaway with friction modifiers for limited-slip applications.
- AMSOIL SEVERE GEAR® 75W-110 100% Synthetic Gear Lube – Another robust option for the differentials designed to control thermal runaway and reduce operating temperatures.
- AMSOIL SEVERE GEAR® 80W-90 100% Synthetic Gear Lube – Suitable for front and rear differential applications where 80W-90 viscosity is required, providing excellent long-term oil and seal life.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Delivers excellent ABS and traction-control responsiveness with stable viscosity over a wide temperature range.
The 2008 Lexus GX470 is a powerhouse of a vehicle, and its heart is the 4.7-liter 2UZ-FE engine. This 4.7-liter V8 is renowned for its smooth power delivery and exceptional durability. Whether you are navigating city streets or taking the vehicle off-road, the engine demands high-quality lubrication to handle the stresses of operation. The oil capacity for this engine is 6.6 quarts when including the filter. It is crucial to check the oil level after refilling to ensure proper coverage. The drain plug should be torqued to 29 ft/lbs to prevent leaks or stripped threads, which is a common maintenance detail often overlooked by non-specialized mechanics.
Proper fluid selection goes beyond just the engine. The automatic transmission in the GX470 is a critical component that benefits significantly from synthetic fluid. The A750F transmission requires a specific fill; while the initial fill is 1.4 quarts, a total fill requires 11 quarts. Using a fluid like AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid helps the transmission withstand heavy towing and high temperatures, conditions that are common for this SUV class. For the transfer case, AMSOIL recommends using SEVERE GEAR® 75W-90 100% Synthetic Gear Lube, with a capacity of 3 pints. This synthetic gear lube helps control thermal runaway and protects against rust and corrosion, ensuring the four-wheel-drive system engages smoothly when needed.
The cooling system of the 2008 GX470 holds 13.6 quarts of coolant. Over time, standard coolants can break down, leading to corrosion within the radiator and waterways. Switching to a premium antifreeze like AMSOIL Passenger Car & Light Truck Antifreeze & Coolant provides protection for up to 150,000 miles or 5 years. This product is phosphate-, nitrate-, and silicate-free, making it compatible with all other antifreeze colors and safe for all cooling system metals, gaskets, and hoses. For those looking for a concentrated solution, AMSOIL Propylene Glycol Antifreeze and Engine Coolant offers even longer service life, particularly in heavy-duty applications, requiring mixing with distilled water for optimal performance.
When it comes to the braking system, reliability is non-negotiable. The 2008 Lexus GX470 uses DOT 3 hydraulic brake fluid. AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid ensures excellent responsiveness and maintains a stable viscosity regardless of temperature fluctuations, which is vital for safe braking in extreme weather conditions. Additionally, the power steering system on this vehicle requires a fluid compatible with DEXRON-III Automatic Transmission Fluid. The AMSOIL Signature Series Multi-Vehicle 100% Synthetic Automatic Transmission Fluid can serve this purpose effectively, offering protection against sludge and ensuring smooth operation.
Maintenance also extends to filtration and fuel system health. For the air intake, the WIX Air Filter (Code 42476-EA) is recommended, offering premium media that improves upon OEM-branded filters. For vehicle owners with high mileage, AMSOIL 5W-30 High-Mileage Motor Oil includes unique chemistry to reduce oil consumption and boost cleaning power. Furthermore, the addition of AMSOIL P.i. Performance Improver Gasoline Additive can restore up to 14% horsepower and improve fuel economy by cleaning fuel injectors. These additives help prevent carbon buildup and control pre-ignition knock, ensuring the engine runs as efficiently as possible.
Maintaining your 2008 Lexus GX470 with these specific AMSOIL products ensures that every moving part is protected against the harsh conditions of modern driving. From the oil filter that safeguards the oil system to the gear lube that protects the differentials, the right fluids make a measurable difference in vehicle longevity and performance.
About the Vehicle
The 2008 Lexus GX470 is a mid-size luxury SUV that bridges the gap between on-road comfort and serious off-road capability. Built on the Toyota Land Cruiser platform, it shares its robust underpinnings with the renowned 4Runner but elevates the interior with premium materials and a quiet, refined ride. The vehicle is powered by the legendary 4.7-liter 2UZ-FE V8 engine, a pushrod design known for its immense torque and incredible longevity. This engine is capable of producing significant horsepower, making the GX470 surprisingly quick for its size despite its substantial weight.
Owners typically choose the GX470 for its towing capacity and 4WD system, which includes a locking center differential and a 2-speed transfer case. This setup allows the vehicle to tackle difficult trails with confidence while remaining comfortable enough for daily commuting. The suspension is tuned for a balance of luxury and utility, often accommodating heavy loads or trailers without sacrificing stability. The interior features a blend of leather, wood trim, and advanced technology for its time, offering a spacious cabin for passengers and cargo. As a Toyota/Lexus product, the GX470 has built a strong reputation for reliability, often reaching high mileages with proper maintenance. Its durability and resale value make it a favorite among enthusiasts who need a practical yet capable vehicle for family use or outdoor adventures.