What kind of oil does a 2002 Infiniti take?
Most 2002 Infiniti models use 5W-30 engine oil, typically a synthetic or synthetic-blend, but the exact grade depends on the model and the climate. Always verify with the owner's manual or a dealer to confirm the specification for your VIN.
The 2002 Infiniti lineup included the G35, I35, QX4 and Q45, each with its own engine, and while the core requirement is a light oil that can perform across a range of temperatures, Infiniti manuals specify the exact viscosity and certification. This article outlines model-specific guidance and how to ensure you’re using the right oil for your car.
Model-specific oil guidance
2002 Infiniti G35 (VQ35DE)
The G35’s VQ35DE typically calls for a 5W-30 lubricant that meets API certification. A synthetic or synthetic-blend 5W-30 is commonly recommended for better protection and consistency, though a conventional 5W-30 may be acceptable if synthetic is unavailable. Climate and driving conditions can influence the exact grade, so follow the manual for your region.
2002 Infiniti I35 (VQ35DE/3.5L V6)
Like the G35, the I35 usually specifies 5W-30 oil that meets API standards. Synthetic or synthetic-blend 5W-30 is preferred for longevity and cold-weather starts, but always reference the owner’s manual for approval of other viscosities if needed by your market.
2002 Infiniti QX4 (3.5L V6)
The QX4 commonly uses 5W-30 oil meeting API standards, with synthetic-blend or full synthetic options often recommended. As with other Infiniti models, consult the manual for any climate-driven viscosity exceptions.
2002 Infiniti Q45 (4.5L V8)
The Q45’s 4.5-liter V8 also aligns with a 5W-30 oil that meets API specs. Synthetic or synthetic-blend formulations are typically preferred to match the engine’s performance needs, though conventional 5W-30 can be used if specified by the manual for your region.
Bottom line: While 5W-30 is the common thread across these 2002 Infiniti models, the exact specification can vary by model, engine, and climate. Always check the owner's manual or with a dealer to confirm the correct oil for your vehicle.
Where to double-check and tips for keeping your Infiniti in top condition
If you don’t have the manual handy, you can often find the oil specification in Infiniti’s official service portal, on a sticker inside the engine bay listing oil grade, or by consulting a certified Infiniti technician. When in doubt, use a synthetic 5W-30 that meets current API/ILSAC standards and is appropriate for the climate in which you operate the car.
Summary
For a 2002 Infiniti, the default recommendation leans toward 5W-30 engine oil, preferably synthetic or synthetic-blend, with the exact grade and certification specified by the owner’s manual. Model and climate can influence the choice, so verify with the manual or a dealer to ensure optimal protection and performance.
