The 2006 Toyota 4Runner with the 4.7-liter V8 (2UZ-FE) uses SAE 5W-30 engine oil, with a total capacity of about 7 quarts (roughly 6.9 liters) including the oil filter. You can use either conventional or full-synthetic oil, as long as it meets API SL or newer service requirements.
Below are the official recommendations, capacity details, and typical maintenance intervals to help you choose the right oil and keep the engine in good condition.
Recommended oil specification
The 2UZ-FE V8 in the 2006 4Runner adheres to multi-grade oil standards for normal driving. The following points summarize the core requirements you should follow when selecting oil for this engine.
- Viscosity: SAE 5W-30 for normal driving conditions.
- Oil type: Conventional or full synthetic acceptable; both can be used as long as the oil meets the API service level requirement.
- API service: At least SL or newer (higher standards approved by API), to ensure proper protection and compatibility.
- Climate and towing notes: Synthetic oil can offer better protection in extreme heat or when towing, but is not strictly required.
Following these specifications helps maintain proper lubrication, fuel efficiency, and engine longevity for the 2UZ-FE V8 in the 2006 4Runner.
Oil capacity and replacement intervals
Knowing the correct oil capacity and change interval helps ensure you perform maintenance on schedule and avoid under- or over-filling the engine.
- Oil capacity (with filter): approximately 6.9–7.0 quarts (about 6.5–6.6 liters).
- Change interval (normal driving): typically 5,000–7,500 miles when using conventional 5W-30; with synthetic oil, 7,500–10,000 miles is common under normal driving conditions. Severe driving conditions (towing, dusty roads, extreme heat) may require more frequent changes.
- Practical tip: always verify the oil level with the dipstick after refilling to the full mark and consult the owner's manual for your exact interval recommendations.
Regular oil changes are essential for the 2UZ-FE V8’s longevity, and adhering to the recommended viscosity and service category helps preserve performance and emissions system integrity.
Summary
For a 2006 Toyota 4Runner V8, use SAE 5W-30 engine oil, in either conventional or synthetic form, with a capacity of about 7 quarts including the filter. Ensure the oil meets API SL or newer standards, and follow the typical change interval of 5,000–7,500 miles with conventional oil or 7,500–10,000 miles with synthetic, adjusting for driving conditions. Always refer to the owner’s manual for the exact specifications and intervals for your vehicle.