The 4.0-liter V6 used in many Nissan Frontiers (the VK56DE) typically requires 5W-30 engine oil, in either a synthetic blend or full synthetic, with an oil capacity of about 6.9 quarts (including the filter) and oil that meets API SN or higher with ILSAC GF-5 certification.
Always check the owner's manual or with a Nissan dealer for your exact model year and regional specifications, as there can be minor variations. However, 5W-30 with a synthetic oil is the standard recommendation for most VK56DE Frontiers.
Oil specifications for the VK56DE
Viscosity and certification
For the 4.0 L VK56DE, Nissan generally specifies 5W-30 oil. Use a synthetic blend or full synthetic that meeting API SN or higher and ILSAC GF-5 standards.
Model years and regional notes
This specification covers the majority of Frontiers and Xterras powered by the VK56DE across common model years. Always verify with your owner’s manual or a Nissan dealer for your exact year and region to confirm any exceptions.
Capacity and maintenance notes
Oil capacity
Oil capacity with filter is approximately 6.9 quarts (about 6.5 liters).
Maintenance intervals
Oil change intervals depend on driving conditions and oil type. If you use synthetic oil, you may be able to extend beyond the older conventional-change intervals, but always follow the factory maintenance schedule and use the dipstick or the vehicle’s maintenance minder to determine when service is needed.
Summary: Use 5W-30 oil (synthetic blend or full synthetic) that meets API SN/ILSAC GF-5 for the VK56DE in the Nissan Frontier, with about 6.9 quarts of oil capacity. Confirm exact year-specific guidance in the owner’s manual and consult a Nissan dealer if in doubt.