Understanding Transmission Fluid for Your Infiniti G35
When it comes to keeping your Infiniti G35 running smoothly, the right transmission fluid is essential. Not only does it lubricate the moving parts of the transmission, but it also helps with heat dissipation and ensures proper hydraulic function. Using the correct type of fluid can make a significant difference in the longevity and performance of your vehicle.
Manufacturer’s Recommendations
The manufacturer recommends using Nissan Matic S or equivalent transmission fluid for the Infiniti G35. This fluid is specifically formulated to meet the requirements of the G35’s automatic transmission, ensuring optimal performance and reliability. Here’s a breakdown of what you need to know about this fluid type:
Specifications
- Type: Automatic Transmission Fluid (ATF)
- Viscosity: Typically, the viscosity is around 9.5 cSt at 100°C.
- Color: Usually red or pink, which helps in identifying leaks.
- Compatibility: Designed to work with the specific components of the G35’s transmission.
Why Use the Recommended Fluid?
Using the recommended fluid is not just a suggestion; it’s a necessity for several reasons:
- Performance: The right fluid ensures that your transmission shifts smoothly and efficiently. Matic S fluid is engineered to provide the necessary frictional properties for optimal gear engagement.
- Protection: This fluid contains additives that help protect against wear and tear, corrosion, and oxidation. This is crucial for extending the life of your transmission.
- Heat Resistance: High-quality ATF can withstand the heat generated during operation, which is especially important in performance vehicles like the G35.
- Warranty Compliance: Using the manufacturer-recommended fluid helps maintain your warranty. If something goes wrong, you want to ensure that you’re covered.
Where to Find the Right Fluid
You can find Nissan Matic S fluid at various auto parts stores, dealerships, or online retailers. Always check the label to ensure it meets the specifications required for your G35. If you’re ever in doubt, consult your owner’s manual or speak with a certified mechanic.
In summary, using the correct transmission fluid is vital for the health of your Infiniti G35. Stick to the manufacturer’s recommendations to keep your vehicle performing at its best.
Recommended Oil Brands for Your Infiniti G35
When it comes to maintaining your Infiniti G35, choosing the right transmission fluid is crucial. While the manufacturer recommends Nissan Matic S, many owners have shared their experiences with various brands that meet or exceed these specifications. Here’s a rundown of the most recommended oil brands based on feedback from forums and owner reviews.
Nissan Matic S

As the factory-recommended fluid, Nissan Matic S is the go-to choice for many G35 owners. Users appreciate its performance and compatibility with the vehicle’s transmission. Here are some reasons why it remains a favorite:
- Specifically formulated for Infiniti and Nissan vehicles.
- Offers excellent protection against wear and tear.
- Ensures smooth shifting and overall performance.
Many owners report that using Matic S has resulted in fewer transmission issues and a more responsive driving experience.
Valvoline MaxLife ATF
Valvoline MaxLife ATF is another popular choice among G35 enthusiasts. This fluid is designed to provide excellent performance in high-mileage vehicles. Here’s what users have to say:
- Compatible with Nissan Matic S specifications.
- Contains conditioners that help rejuvenate seals, reducing leaks.
- Provides good thermal stability and oxidation resistance.
Owners have noted that switching to Valvoline MaxLife has improved shifting quality and reduced slippage, especially in older models.
Mobil 1 Synthetic ATF
Mobil 1 Synthetic ATF is often recommended for those looking for a synthetic option. Users have praised its performance in extreme conditions. Key points include:
- Excellent cold-weather performance, reducing wear during startup.
- High resistance to thermal breakdown, ensuring longevity.
- Compatible with many automatic transmissions, including those in the G35.
Many owners report that using Mobil 1 has led to smoother shifts and improved overall transmission responsiveness.
Castrol Transmax Import Multi-Vehicle ATF
Castrol Transmax Import is another brand that has gained traction among G35 owners. This fluid is designed for import vehicles and meets the necessary specifications. Feedback includes:
- Good performance in a variety of driving conditions.
- Helps maintain smooth shifting and reduces noise.
- Compatible with Nissan Matic S requirements.
Users have found that Castrol Transmax Import provides a good balance of performance and price, making it a solid choice for budget-conscious owners.
Royal Purple Max ATF
Royal Purple Max ATF is a premium synthetic fluid that many G35 owners swear by. Known for its high-performance capabilities, it has received positive reviews for several reasons:
- Superior lubrication properties that reduce wear.
- Improves shifting performance and responsiveness.
- Compatible with most automatic transmissions, including the G35.
Owners have reported noticeable improvements in shifting smoothness and overall transmission performance after switching to Royal Purple.
Amsoil Synthetic ATF
Amsoil is well-known in the automotive community for its high-quality synthetic products. Their Synthetic ATF is no exception and has garnered favorable reviews from G35 owners. Highlights include:
- Excellent protection against thermal breakdown.
- Compatible with Nissan Matic S specifications.
- Designed to extend transmission life and improve performance.
Many users have shared that Amsoil has helped reduce transmission temperatures, leading to better overall performance.
Summary of Owner Experiences
Overall, the feedback from G35 owners suggests that while Nissan Matic S is the safest bet, several other brands can deliver excellent performance. Here’s a quick comparison of the recommended brands based on owner feedback:
- Nissan Matic S – Best for factory specifications.
- Valvoline MaxLife ATF – Great for high-mileage vehicles.
- Mobil 1 Synthetic ATF – Excellent for extreme conditions.
- Castrol Transmax Import – Good balance of performance and price.
- Royal Purple Max ATF – Premium option for high performance.
- Amsoil Synthetic ATF – Known for thermal protection and longevity.
When selecting a transmission fluid for your Infiniti G35, consider your driving habits, vehicle age, and any specific performance needs. Always check compatibility and ensure that the fluid meets the necessary specifications to keep your transmission running smoothly.
Change Interval for Your Infiniti G35 Transmission Fluid
Keeping your Infiniti G35’s transmission fluid fresh is essential for maintaining optimal performance. The change interval for transmission fluid can vary based on driving conditions and habits, but general guidelines can help you determine when it’s time for a change.
Recommended Change Interval
For the Infiniti G35, the recommended change interval for transmission fluid is typically around 30,000 to 60,000 miles (approximately 48,000 to 96,000 kilometers). However, this can depend on several factors:
- Driving Conditions: If you frequently drive in stop-and-go traffic, tow heavy loads, or operate in extreme temperatures, you may need to change the fluid more often.
- Vehicle Age: Older vehicles may require more frequent changes due to wear and tear on the transmission.
- Fluid Condition: Regularly checking the fluid color and smell can provide insight into its condition. If it appears dark or burnt, it’s time for a change.
Statistical data from automotive maintenance studies suggest that adhering to these intervals can help prevent costly transmission repairs. According to the Automotive Maintenance and Repair Association, regular fluid changes can extend the life of your transmission by up to 50%.
Partial Transmission Oil Changes
In many cases, a full transmission fluid change can only be achieved by removing the transmission from the vehicle. This is not only labor-intensive but can also be costly. Therefore, many owners opt for partial transmission oil changes, which can be performed more easily and frequently.
What is a Partial Change?
A partial transmission oil change involves draining a portion of the old fluid and replacing it with new fluid. This method is less invasive and can be done without removing the transmission. Here’s how it typically works:
- Draining approximately 30-50% of the old fluid.
- Refilling with new transmission fluid.
- Repeating the process every 15,000 to 20,000 miles (24,000 to 32,000 kilometers) for optimal results.
Benefits of Partial Changes
Partial transmission fluid changes offer several advantages:
- Cost-Effective: Less labor is involved, making it more affordable than a full fluid change.
- Less Downtime: The process can be completed quickly, allowing you to get back on the road sooner.
- Improved Fluid Quality: Regular partial changes help maintain better fluid quality over time, reducing the risk of transmission issues.
Justification for Partial Changes
Automotive experts and mechanics often recommend partial changes as a practical solution for maintaining transmission health. According to a study by the Society of Automotive Engineers, regular fluid replacement—whether full or partial—can significantly reduce the risk of transmission failure. The study found that vehicles with regular fluid maintenance had a 30% lower incidence of transmission-related issues compared to those that did not.
In summary, while the recommended change interval for your Infiniti G35’s transmission fluid is crucial, understanding the benefits of partial changes can help you maintain your vehicle’s performance without the need for costly and time-consuming full fluid changes. Regular maintenance is key to ensuring your transmission remains in good working condition for years to come.