Maintaining the 2007 Infiniti G35 with its 3.5L VQ35HR D engine requires premium synthetic lubricants to ensure longevity and performance. Proper fluid selection protects critical components from wear, deposits, and extreme operating temperatures. Using the right motor oil, filter, and supporting fluids is essential for keeping this luxury sports sedan reliable for years to come.
Recommended AMSOIL Products
- AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil – Offers unsurpassed engine protection and up to 25,000 miles of coverage with 75% more protection against horsepower loss and wear.
- AMSOIL Extended-Life 5W-30 100% Synthetic Motor Oil – Provides extended oil change intervals up to 20,000 miles with enhanced cleaning power to keep the engine running smoother for longer.
- AMSOIL OE 5W-30 100% Synthetic Motor Oil – An economical choice that outperforms conventional oils, fighting sludge and deposits while offering reliable protection.
- AMSOIL Oil Filter – Delivers 99% filtration efficiency at 20 microns to trap contaminants, reduces engine wear, and features greater capacity for small particles than competing filters.
- WIX Oil Filter – A premium alternative featuring advanced media that offers improvements over original equipment manufacturer branded filters, meeting OE recommended intervals.
The 2007 Infiniti G35 is powered by the robust VQ35 engine, specifically the VQ35HR variant in this model. This engine demands oil that can handle high temperatures and the stress of spirited driving without breaking down. AMSOIL motor oils are formulated to exceed industry standards, providing a protective barrier that minimizes friction and maximizes horsepower. With a capacity of 5.0 quarts (including filter change), using a full synthetic oil allows owners to extend service intervals significantly compared to conventional products, reducing maintenance frequency and costs over the life of the vehicle.
Transmission and Differential Protection
The transmission system in the G35 operates under intense conditions, whether it is the automatic or manual configuration. For the automatic RE5R05A transmission, full synthetic transmission fluids provide superior thermal stability and protection against wear. The manual FS6R31A 6-speed transmission requires a high-quality gear lube that can handle the heat generated during aggressive shifting.
AMSOIL Signature Series Fuel-Efficient 100% Synthetic Automatic Transmission Fluid withstands the rigors of heavy towing and elevated temperatures while remaining fluid in sub-zero conditions. For manual transmissions, AMSOIL 75W-90 Manual Transmission & Transaxle Gear Lube offers outstanding cold-flow properties and protects brass synchronizers, ensuring smooth shifts and extended gear life.
The differential systems also benefit from premium lubrication. Whether dealing with the front or rear limited-slip differentials requiring 80W-90 lubricants, AMSOIL SEVERE GEAR® 80W-90 100% Synthetic Gear Lube provides advanced protection against wear and thermal runaway. These lubricants contain friction modifiers specifically designed for limited-slip applications, helping to prevent chatter and ensure reliable power delivery to the wheels.
Coolant and Brake Systems
Maintaining the cooling system is vital for the VQ35 engine, as overheating can lead to catastrophic failures. The coolant capacity varies slightly by body style, with the coupe requiring approximately 9.2 quarts and the sedan needing 9.5 quarts. A high-performance coolant extends the life of the cooling system components and prevents corrosion.
AMSOIL Passenger Car & Light Truck Antifreeze & Coolant features a unique poly-organic acid formulation that protects all cooling system metals, gaskets, and hoses. It is compatible with all other coolant colors and offers protection for up to 150,000 miles or 5 years. For those preferring a concentrated option, AMSOIL Propylene Glycol Antifreeze and Engine Coolant is an excellent choice that greatly surpasses standards for metallic corrosion and erosion.
Brake safety is paramount, especially in a performance-oriented vehicle. Over time, brake fluid absorbs moisture, which lowers its boiling point and can lead to brake fade under heavy use. AMSOIL DOT 3 and DOT 4 100% Synthetic Brake Fluid ensures excellent ABS and traction-control responsiveness. It provides stable viscosity over a wide temperature range, preventing the formation of vapor pockets that can compromise braking performance.
Other Essential Fluids and Maintenance
Beyond the engine and drivetrain, other fluid systems require attention. The power steering system benefits from AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid, which reduces friction, helps seals remain soft to prevent leaks, and offers strong anti-wear protection. This fluid is formulated for quiet operation and excellent high-temperature resistance.
For fuel system maintenance, AMSOIL P.i.® Performance Improver Gasoline Additive can restore up to 14% horsepower and clean GDI fuel injectors to 100% flow rate. This additive helps control pre-ignition knock and reduces the need for higher-octane fuel. Additionally, for seasonal storage, AMSOIL Gasoline Stabilizer keeps fuel fresh for up to 12 months, preventing varnish and gum buildup that can clog fuel systems.
Vehicle Background
The 2007 Infiniti G35 represents the culmination of a design philosophy that prioritized driving dynamics and performance. Part of the G35 generation that ran from the mid-2000s, this model is often celebrated for its balance of luxury and sportiness. Powered by the renowned VQ35 series engine, specifically the VQ35HR in this iteration, the vehicle delivers a blend of reliability and high-revving power that appealed to enthusiasts looking for a daily driver with genuine sporting credentials.
The G35 was available in various body styles, including the sleek Coupe and the practical Sedan. The VQ35HR engine, characterized by its “High Rise” cylinder heads, offers increased horsepower over its predecessors, typically reaching outputs around 300 horsepower. This powertrain is paired with either a smooth-shifting automatic transmission or a manual gearbox that engages the driver directly, providing a connected feel that is often sought after in the luxury sports sedan segment. The vehicle’s reputation is built on its robust engineering, which allows it to handle spirited driving while maintaining a level of comfort expected from the Infiniti brand.
Owners of the 2007 G35 often appreciate the vehicle’s handling characteristics, which are derived from a rear-wheel-drive layout and a well-tuned suspension. The platform, shared with the Nissan 350Z, brings a sporting heritage that resonates with drivers who enjoy an engaging drive. However, like any aging performance vehicle, there are specific maintenance areas where owners should be vigilant.
One common issue that owners encounter with the VQ35 engine is oil consumption, particularly as the vehicle ages. This can lead to lower oil levels between scheduled changes, potentially risking engine wear if not monitored closely. Using high-quality synthetic motor oil with enhanced anti-wear additives can help mitigate this issue and extend the life of internal engine components.
Another concern for G35 owners involves the cooling system. The engine operates at elevated temperatures, and over time, the plastic components of the cooling system can degrade. Ensuring that the coolant is of the highest quality and the system is flushed regularly can prevent overheating and corrosion-related failures.
Transmission health is also a critical maintenance point. The automatic transmission fluid can break down under the heat of spirited driving, leading to shudder or rough shifts. Regular fluid changes using a full synthetic transmission fluid can smooth out these shifts and prolong the life of the transmission clutch packs and bands.
Finally, suspension and steering components can wear out due to the demands of driving a performance car. The power steering fluid degrades over time, which can lead to noise or leaks. Keeping the power steering system topped up with AMSOIL 100% Synthetic Multi-Vehicle Power Steering Fluid helps ensure the steering remains smooth and quiet. Addressing these specific areas with AMSOIL synthetic products allows owners to keep their 2007 Infiniti G35 running at peak performance for years to come.