Most 2008 Infiniti models with V6 engines take about 5 quarts of engine oil, while V8-powered models require roughly 7–8 quarts. The exact amount depends on the specific engine and model, so always verify with your owner's manual or the under-hood capacity sticker for your vehicle.
V6 engines: capacity at a glance
These figures cover the common 2008 Infiniti V6s found in models like the G35, FX35, and M35. They assume a full oil change with a new filter and the manufacturer’s recommended viscosity.
- 3.5L VQ35DE (G35, FX35, M35): approximately 5.0–5.1 quarts (4.7–4.8 L) with an oil filter. Typical oil: synthetic 5W-30.
- 3.7L VQ37VHR (G37, FX37, later M-series): approximately 5.3–5.5 quarts (about 5.0 L) with filter. Typical oil: synthetic 5W-30.
Conclusion: The 3.7L tends to require a bit more oil than the 3.5L due to its larger displacement, but both stay in the roughly 5-quart range when you replace the filter.
V8 engines: capacity at a glance
For 2008 Infiniti models with V8 power, oil needs are higher to accommodate the larger engines and oil pans. These figures include a new filter.
- 4.5L V8 (1UR) (M45, Q45): about 7.0 quarts (6.6 L) with filter.
- 5.6L V8 (QX56): about 8.0–8.5 quarts (7.6–8.0 L) with filter. Note: some early 2008 QX56 configurations used the 5.6L V8; confirm exact displacement for your vehicle.
Conclusion: V8 variants generally require noticeably more oil than V6 versions; always confirm the exact capacity for your VIN and model year.
Model-specific notes
While these ranges cover the main engine families, some 2008 Infiniti submodels used slightly different configurations. Checking the owner’s manual, service guide, or the under-hood oil-capacity label remains the best way to confirm the exact oil capacity for your car.
Summary: In the 2008 Infiniti lineup, oil capacity varies by engine: roughly 5 quarts for typical V6s and about 7–8 quarts for V8-powered models. Use the recommended viscosity, replace the oil filter, and verify the final level with the dipstick after the change.