2021 Ram 1500
30,000 mile service checklist
Here's exactly what your factory maintenance schedule calls for at this mileage — and what each item typically costs.
30,000 mile service
- Engine oil and filter change — 0W-20 full synthetic
- Tire rotation
- Replace cabin air filter
- Replace engine air filter
- Inspect spark plugs — 3.6L Pentastar iridium (factory interval ~100k, inspect for fouling at 30k on tow/heavy-use trucks)
- Inspect spark plugs — 5.7L HEMI iridium (factory interval ~60k-100k depending on eTorque; inspect at 30k)
- Inspect front differential fluid (4x4 — Mopar 75W-140 synthetic gear oil; change if milky or dark)
- Inspect transfer case fluid (4x4 — Mopar ATF+4)
- Inspect rear axle fluid (all 4x4 and heavy-tow 2WD; limited-slip requires friction modifier additive)
- Inspect 8-speed automatic transmission fluid — ZF 8HP45/8HP70 ATF+4 (inspect condition, especially on tow-package trucks)