2020 Jeep Wrangler maintenance schedule

Written in plain English and reviewed by the eli5cars editorial team · Last reviewed June 2026

3.6L Pentastar V6 (285 hp), 2.0L turbocharged 4-cylinder eTorque mild hybrid (270 hp), optional 3.0L EcoDiesel V6 (260 hp)SportSport SFreedomMSRP $29,995

Jump to a mileage milestone:

30k miles 60k miles 90k miles 120k miles

Full service timeline

Mileage	Service items	Details
6k mi	Engine oil and filter change — 0W-20 full synthetic (3.6L Pentastar V6 and 2.0L turbo eTorque both require SAE 0W-20 full synthetic per FCA/Stellantis spec MS-6395; 3.0L EcoDiesel: 5W-40 full synthetic diesel spec); interval based on Jeep Electronic Vehicle Information Center (EVIC) oil change indicator Inspect tire pressure — Wrangler tires are prone to pressure loss with trail use Inspect all fluid levels Inspect front and rear Dana axle breather vents (especially important on Rubicon Dana 44 axles — mud and water intrusion through breathers causes rapid gear oil contamination)
12k mi	Engine oil and filter change — 0W-20 full synthetic (per EVIC indicator) Tire rotation — all-terrain and mud-terrain tires wear asymmetrically off-road; rotate more frequently if trail-driven Inspect brake pads and rotors — Rubicon rotor exposure to trail debris accelerates wear Inspect front and rear brake hoses — flex hoses are exposed on Wrangler; inspect for cracking Inspect all fluid levels Inspect cabin air filter
30k mi	Engine oil and filter change — 0W-20 full synthetic Tire rotation Replace cabin air filter Replace engine air filter — off-road use: inspect at 15k and replace more frequently if heavy dust exposure Inspect spark plugs — 3.6L Pentastar iridium (factory interval ~100,000 mi; inspect at 30k for fouling from off-road idling) Replace front Dana axle gear oil — Dana 30 (Sport/Sahara) or Dana 44 (Rubicon): SAE 80W-90 mineral or SAE 75W-90 synthetic; Rubicon factory fill is synthetic — maintain synthetic Replace rear Dana axle gear oil — Dana 35 (Sport/Sahara) or Dana 44 (Rubicon): same spec; if Trac-Lok limited-slip equipped, add Mopar limited-slip additive Replace transfer case fluid — NV241 Rock-Trac (Rubicon) or NV231 (Sport/Sahara): ATF+4 per Jeep spec; Command-Trac and Rock-Trac both use ATF+4 Inspect manual transmission fluid (if 6-speed Tremec TR3650 manual equipped — GL-4 75W-90 synthetic; severe off-road: replace at 30k) Inspect automatic transmission fluid — 8-speed 850RE: ATF+4; inspect color; replace under severe use (towing, water crossings) Inspect front and rear driveshaft u-joints and slip yoke — grease Zerk fittings on equipped models Inspect steering components: tie rod, drag link, track bar, and steering stabilizer	View →
60k mi	Engine oil and filter change — 0W-20 full synthetic Tire rotation Replace cabin air filter Replace engine air filter Replace spark plugs — 3.6L Pentastar iridium (factory ~100k; replace at 60k if off-road use is heavy, plug fouling from low-speed crawling is common); 2.0L turbo: replace iridium plugs at 60k due to turbo combustion stress Replace front axle gear oil — Dana 30/44: 75W-90 synthetic (on-road use) or 80W-140 synthetic (severe off-road/towing) Replace rear axle gear oil — same spec; check for water contamination (milky appearance) from stream crossings Replace transfer case fluid — ATF+4 Replace manual transmission fluid — GL-4 75W-90 (6-speed Tremec) Replace automatic transmission fluid — ATF+4 (8-speed 850RE; some dealers do not recommend change but off-road use warrants it) Replace brake fluid — DOT 3 or DOT 4 Inspect coolant — OAT (orange) extended life; first change typically 10 years/150k — inspect at 60k for pH and freeze-point Inspect serpentine belt Inspect all four wheel hubs and bearings (sealed on front; adjustable on some rear configurations) Inspect front and rear differential cover seals	View →
90k mi	Engine oil and filter change — 0W-20 full synthetic Tire rotation Replace spark plugs — 3.6L Pentastar iridium (if not replaced at 60k, replace now; second set for severe-use owners who replaced at 60k) Replace front and rear axle gear oil Replace transfer case fluid — ATF+4 Replace brake fluid — DOT 3 full flush Inspect serpentine belt — replace if worn Inspect all coolant hoses Inspect steering linkage and ball joints — Wrangler off-road use accelerates ball joint wear significantly Inspect front swaybar disconnect (Rubicon electronic disconnect or manual linkage) for proper operation Inspect skid plates and underbody for impact damage from trail use Inspect shock absorbers for leaking or blown seals	View →
120k mi	Engine oil and filter change — 0W-20 full synthetic Tire rotation Replace spark plugs — second or third set depending on prior service history (3.6L Pentastar iridium; 2.0T iridium) Replace coolant — OAT extended life flush and refill Replace serpentine drive belt Replace front and rear axle gear oil Replace transfer case fluid — ATF+4 Replace brake fluid — DOT 3 Full brake overhaul inspection: pads, rotors, calipers, brake lines, and parking brake Replace manual transmission fluid (6-speed Tremec) or inspect automatic transmission fluid (8-speed 850RE) Inspect all CV boots and u-joints on front half-shafts (especially Rubicon with front locker engaged frequently) Inspect and clean throttle body — carbon buildup on 3.6L Pentastar direct injection port injection Inspect fuel system pressure and pump operation	View →

Common symptoms for this vehicle

Check engine light on? Get a free code scan

If your check engine light is on, most auto-parts stores (AutoZone, O'Reilly, Advance) will read the code for FREE — no purchase required, just walk in. Bring the code back here and look it up at eli5cars.com/obd2 for the plain-English explanation.

Note: a scan only helps when there's an active fault code. For purely mechanical symptoms (noises, vibrations, leaks), a scan may show nothing — the suspects listed above are your starting point.