Maintaining your 2008 Infiniti G35 with the 3.5L VQ35HR engine requires precise fluid selection to ensure the engine, transmission, and drivetrain operate with maximum efficiency and longevity. This specific engine code demands a lubrication regimen that can handle high RPMs and varying driving conditions while protecting against wear and sludge accumulation. Using the correct viscosity and certified products helps preserve the vehicle’s performance and can extend the intervals between service intervals significantly compared to conventional alternatives.
Recommended AMSOIL Products
Below are the specific AMSOIL products formulated to meet the exact specifications of the 2008 Infiniti G35 VQ35HR, including the recommended oil change kits, filters, and all essential fluids for complete vehicle protection.
- AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil – Offers unsurpassed engine protection for up to 25,000 miles, ideal for drivers seeking maximum horsepower retention and wear reduction.
- AMSOIL Extended-Life 5W-30 100% Synthetic Motor Oil – Provides extended protection for up to 20,000 miles with enhanced cleaning power to keep the VQ35HR engine running smoother.
- AMSOIL OE 5W-30 100% Synthetic Motor Oil – An outstanding value that outperforms conventional oils and fights sludge effectively while meeting OEM requirements.
- AMSOIL 5W-30 100% Synthetic High-Mileage Motor Oil – Specifically formulated for engines with over 75,000 miles to reduce sludge and boost detergent performance.
- AMSOIL Oil Filter – Provides 99% filtering efficiency at 20 microns with greater capacity for contaminants than competing filters.
- WIX Oil Filter – Offers premium media improvements over original equipment manufacturer (OEM)-branded filters.
- WIX Air Filter – Premium media offers improvements over original equipment manufacturer (OEM)-branded filters.
- AMSOIL Passenger Car & Light Truck Antifreeze & Coolant – A unique poly-organic acid formulation that protects the cooling system for up to 150,000 miles.
- AMSOIL Propylene Glycol Antifreeze and Engine Coolant – A concentrated option for those who prefer to mix their own, offering protection up to 150,000 miles.
- AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Withstands heavy towing and elevated temperatures in the RE5R05A transmission.
- AMSOIL OE Fuel-Efficient 100% Synthetic Automatic Transmission Fluid – Protects against wear and promotes smooth shifts in the automatic transmission.
- AMSOIL 75W-90 Manual Transmission & Transaxle Gear Lube – Essential for the FS6R31A manual transmission, protecting brass synchronizers under increased heat and pressure.
- AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid – Delivers excellent ABS responsiveness and stable viscosity across a wide temperature range for hydraulic brake systems.
- AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid – Reduces friction and keeps seals soft to prevent leaks in power steering systems.
The VQ35HR engine in the 2008 Infiniti G35 is a masterpiece of automotive engineering, featuring dual overhead camshafts and a 30-degree V-angle. Because this engine is designed to rev high and deliver substantial horsepower, the oil it uses must provide a robust film strength to prevent metal-on-metal contact during aggressive driving. The standard 5W-30 viscosity is preferred by the manufacturer for all temperature ranges, and our Signature Series 5W-30 100% Synthetic Motor Oil ensure this engine stays protected whether you are navigating city traffic or hitting the open road for a spirited drive. By choosing AMSOIL Extended-Life or AMSOIL OE, you are selecting a lubricant that exceeds industry standards, offering up to 25% more wear protection than conventional oils.
Beyond the engine, the 2008 G35 features a 5-speed automatic transmission (RE5R05A) that benefits greatly from a synthetic fluid capable of maintaining its viscosity under stress. The manual version, equipped with the FS6R31A transmission, requires a specific 75W-90 75W-90 Manual Transmission & Transaxle Gear Lube to ensure smooth engagement of gears and protection for the synchronizers. The cooling system is equally critical; the G35 requires 9.5 quarts of AMSOIL Passenger Car & Light Truck Antifreeze & Coolant to operate optimally. Our antifreeze products use a long-life OAT formula that does not contain silicates or phosphates, ensuring it is compatible with all the metals and rubber hoses in your vehicle’s cooling system for up to five years or 150,000 miles. Proper fluid maintenance here prevents costly overheating issues and extends the life of the radiator and water pump.
Drivetrain and Safety Fluids
For the drivetrain, the 2008 G35 may be equipped with a front and rear differential that requires high-performance gear lubricants. The synthetic gear lubes we recommend, such as the AMSOIL SEVERE GEAR 80W-90 100% Synthetic Gear Lube, are designed to control thermal runaway and protect against rust and corrosion. These lubricants contain friction modifiers that are particularly beneficial for limited-slip differentials, ensuring smoother operation and preventing the chattering often associated with worn clutches in these systems. Additionally, the brake system relies on DOT 3 and DOT 4 specifications; our 100% synthetic AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid provides a higher boiling point than conventional fluids, maintaining pedal feel and responsiveness even during hard braking sessions.
Power steering systems in this vehicle also benefit from a full synthetic fluid that resists heat degradation. The 100% synthetic multi-vehicle AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid helps seals remain soft, which is crucial for preventing leaks that can lead to a loss of steering assist. For owners looking to maximize fuel economy and restore lost power, the P.i. AMSOIL P.i. Performance Improver gasoline additive is a recommended addition. It cleans fuel injectors and can restore up to 14% horsepower, helping the engine breathe better and burn fuel more efficiently. Whether you are performing routine maintenance or preparing for a long-distance trip, using these specialized fluids ensures your Infiniti performs exactly as it was designed.
Vehicle Background
The 2008 Infiniti G35 represents the final evolution of the R34 platform’s successor, marking a significant year for the brand’s sports sedan lineup. This model year features the “High Revolution” version of the 3.5-liter V6 engine, known as the VQ35HR. The “HR” designation stands for High Revolution, and this update brought improvements such as a lighter flywheel, revised piston design, and a higher redline compared to earlier VQ35 engines. This naturally aspirated powerhouse produces a smooth and linear power delivery that enthusiasts have long admired, offering a driving experience that rivals European competitors of the era.
As a luxury sports sedan, the G35 offered a compelling blend of performance, handling, and comfort. It came with either a smooth 6-speed manual transmission or a responsive 5-speed automatic, allowing drivers to choose between a more engaging driving dynamic or ease of use. The vehicle’s chassis is renowned for its balanced handling characteristics, making it a favorite on back roads and twisty mountain passes. Inside, the cabin focuses on driver-centric ergonomics with high-quality materials and supportive seats. For owners of the 2008 model, regular maintenance is the key to keeping the engine’s responsiveness sharp and the transmission shifts crisp. By following the recommended fluid schedules and using premium synthetic lubricants, owners can ensure their G35 continues to deliver the spirited performance it is famous for, even as the vehicle accumulates miles. The G35 solidified Infiniti’s reputation for building reliable, performance-oriented sedans that offer an exceptional value compared to their German counterparts.
Regular fluid changes are not just about meeting maintenance schedules; they are about preserving the mechanical integrity of a vehicle that was engineered for performance. The differences in synthetic formulations can be felt in the engine’s smoothness, the precision of the gear shifts, and the overall longevity of the vehicle. By utilizing the recommended products listed above, you are investing in the continued health of your 2008 Infiniti G35, ensuring it remains a reliable and enjoyable daily driver for years to come.
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