2021 Toyota 4Runner
120,000 mile service checklist
Here's exactly what your factory maintenance schedule calls for at this mileage — and what each item typically costs.
120,000 mile service
- Engine oil and filter change — 0W-20 full synthetic
- Tire rotation
- Replace spark plugs — iridium (4.0L V6 factory interval: 120k miles)
- Replace engine coolant — Toyota Super Long Life Coolant pink (first change at 100k miles or 10 years, then every 50k)
- Replace automatic transmission fluid — 5-speed automatic: Toyota Genuine ATF WS; change by 60k for towing/severe use, 120k standard use
- Replace front differential fluid — Toyota 75W-90 GL-5 (4WD)
- Replace transfer case fluid — Toyota ATF Type T-IV (4WD)
- Replace rear differential fluid — Toyota 75W-90 GL-5
- Replace serpentine belt if not already replaced
- Full brake system flush — DOT 3
- Inspect and service front wheel bearings and hub assemblies