The Infiniti G35 was a popular luxury coupe and sedan produced by Nissan’s Infiniti brand between 2003 and 2008. Over those model years, the G35 was in the market with various engine options that required different oil types and capacities to keep running in peak conditions. Using the manufacturer-recommended motor oil is essential to maximize the performance and lifespan of your G35’s engine.
In this article, we’ll look at what kind of oil types and how much of oil that your G35 needs for a smooth-running engine and drivetrain. We’ll review the factory oil weight and capacity recommendations for each G35 coupe and sedan model year.
Properly maintaining your G35’s lubrication system will help this sporty luxury car to achieve its full performances while avoiding unnecessary wear and tear.
So, read on for in-depth details on selecting the best motor oil for your 2003 – 2008 Infiniti G35!
Table of Contents
2003-2008 Infiniti G35 Oil Types And Capacities
- The 3.5L V6 engine in all G35 models requires premium conventional or synthetic oil with an API rating of SL or later. This is because, lower-quality oil types can cause buildup and sludge.
- For 2003-2006 models, Infiniti recommends 5W-30 viscosity oil for most temperature ranges. This provides year-round protection as an advantage. Therefore, owners in colder climates may use 5W-20 for better cold flow.
- For 2007-2008 models, a lighter 5W-20 weight oil is ideal for optimum fuel economy and cold weather performances. Stick with 5W-30 if you are living in hot regions.
- Infiniti specifies oil with a minimum ILSAC GF-4 certification for later G35 models. On the plus side, many modern synthetic blends meets this spec.
- Oil capacity is 4.8 quarts for 2003 coupes. All other models hold 4.2 quarts, including the filter change. Therefore, always check the dipstick for your own confirmation.
- Change the vehicle’s oil in every 5,000-7,500 miles for a conventional oil cycle. In addition to that, synthetics may allow up to 10,000-mile intervals. So, it is best to check your owner’s manual before making any attempts.
- Use only OEM Infiniti oil filters. This is because aftermarket filters may not have the correct pressure valves.
- Check the oil level regularly and top off if needed. Remember that, burning one qt per 1,500 miles is considered normal in regular driving conditions.
- If converting to synthetic oil, change the filter when switching over to prevent any contaminations.
- For maximum protection, look for the oil types such as SJ, SL or SM standards. You might also get confuse while selecting the genuine oil type, since there are a lot of brands that got the Infiniti approval.
Frequently Asked Questions About 2003 – 2008 Infiniti G35 Oil Type And Oil Capacity
Q: Do I have to use Genuine Nissan oil filters?
A: Yes. Aftermarket filters may not regulate oil pressure properly. Therefore, always stick with OEM parts.
Q: Should I switch to synthetic oil in my high-mileage G35?
A: The general answer is yes. Synthetic oil can help to seal the conditions and reduce the consumption in worn engines. Make sure to follow the proper break-in procedures.
Q: Can I mix different weights or types of oil?
A: No. NEVER mix oil types. If you do so, it can lead to flow problems and engine damage issues.
Q: How do I dispose of used motor oil?
A: Check for the local regulations. Most auto parts stores recycle oil for free.