| 5k mi | - ✓Engine oil and filter change — 0W-20 full synthetic — per Toyota's official 2021 Tundra Warranty & Maintenance Guide, the Normal-schedule interval is every 10,000 mi / 12 months when 0W-20 full synthetic is used (the 2021 Tundra has no oil-life monitor, so this is a fixed-mileage interval, not a monitored one). The Severe/Special Operating Conditions schedule — towing, dusty roads, extensive idling, or repeated short trips under 32°F — tightens this to every 5,000 mi / 6 months. This timeline uses the conservative 5,000-mile checkpoint cadence throughout since most Tundras see at least some towing or severe-duty use; if your use is confirmed Normal-only, oil only needs changing at every other checkpoint (10,000 mi)
- ✓Inspect tire pressure and adjust to door-placard spec (verify separately for unloaded vs. towing/loaded)
- ✓Rotate tires
- ✓Inspect all exterior lights and wiper blades
- ✓Inspect brake pads and rotors
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| 15k mi | - ✓Engine oil and filter change — 0W-20 full synthetic
- ✓Tire rotation
- ✓Inspect brake pads, rotors, and calipers front and rear
- ✓Inspect all fluid levels: coolant (Toyota Super Long Life Coolant), brake fluid, washer fluid
- ✓Inspect cabin air filter — replace if dusty or restricted
- ✓Inspect front differential and transfer case for leaks (4WD models)
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| 30k mi | - ✓Engine oil and filter change — 0W-20 full synthetic
- ✓Tire rotation
- ✓Replace cabin air filter
- ✓Replace engine air filter
- ✓Inspect spark plugs — iridium; factory replacement interval is 120,000 mi, no action needed at 30k
- ✓Inspect rear differential fluid and front differential/transfer case fluid (4WD) — Toyota calls for change sooner under severe use (towing, off-road, frequent water crossings)
- ✓Inspect timing chain and tensioners (maintenance-free — inspect only, no scheduled replacement)
- ✓Inspect drive belt and engine mounts
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| 60k mi | - ✓Engine oil and filter change — 0W-20 full synthetic
- ✓Tire rotation
- ✓Replace cabin air filter
- ✓Replace engine air filter
- ✓Replace rear differential fluid and front differential/transfer case fluid (4WD) — required sooner than 60k if towing or off-road use is frequent (Toyota's severe schedule calls for change around 30k under those conditions)
- ✓Inspect automatic transmission fluid (6-speed) — Toyota WS fluid; long-life fill, inspect condition
- ✓Inspect coolant condition — Toyota SLLC, first scheduled change is 100,000 mi / 10 years under normal use
- ✓Inspect brake fluid — replace if moisture-contaminated
- ✓Inspect drive belt, hoses, and engine mounts
- ✓Inspect suspension: ball joints, control arm bushings, sway bar links (leaf springs rear, coil/leaf per trim)
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| 90k mi | - ✓Engine oil and filter change — 0W-20 full synthetic
- ✓Tire rotation
- ✓Replace brake fluid — DOT 3
- ✓Replace rear differential fluid and front differential/transfer case fluid (4WD), second change
- ✓Inspect automatic transmission fluid
- ✓Inspect suspension components and steering linkage
- ✓Inspect wheel bearings and u-joints (4WD models)
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| 120k mi | - ✓Engine oil and filter change — 0W-20 full synthetic
- ✓Tire rotation
- ✓Replace spark plugs — iridium, factory interval 120,000 mi
- ✓Replace coolant — Toyota SLLC, flush and refill
- ✓Replace automatic transmission fluid (6-speed) — preventive change if towing history is significant
- ✓Replace rear differential fluid and front differential/transfer case fluid (4WD), third change
- ✓Replace drive belt
- ✓Full brake inspection: pads, rotors, calipers, brake lines, master cylinder
- ✓Inspect frame and undercarriage for corrosion (known area of concern on earlier Tundra generations; inspect on this generation as standard preventive practice, especially in road-salt regions)
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