Specs, fluids & service · 2020–present
Jeep Gladiator JT specs, fluids and service intervals
The numbers you need in the garage, on one page: spec sheet, capacities and service intervals, wheels and tires, and the parts to order. Sourced from owners, specialists and the factory; tags marked confirm in manual haven't been checked against a factory source yet.
Spec sheet
| PLATFORM | JT (JL-based body-on-frame) |
|---|---|
| PRODUCTION | April 2019–present, Toledo, Ohio |
| MODEL YEARS | 2020–present |
| WHEELBASE | 137.3 in (3,487 mm) |
| LENGTH | 218.0 in (5,539 mm) |
| BED | 60.3 in (81.3 in tailgate down), 35.5 cu ft |
| ENGINE | 3.6 Pentastar V6 · 285 hp / 260 lb-ft |
| DIESEL | 3.0 EcoDiesel V6 · 260 hp / 442 lb-ft (2021–23) |
| TRANSMISSIONS | D478 6-speed manual (to 2024) · 850RE 8-speed auto |
| TRANSFER CASES | Command-Trac 2.72:1 · Rock-Trac 4:1 · Selec-Trac |
| AXLES | Dana 44 front and rear; Tru-Lok on Rubicon |
| CURB WEIGHT | 4,650–5,072 lb (2020 gas) |
By year
| YEARS | PLATFORM | ENGINE | OUTPUT | NOTES |
|---|---|---|---|---|
| 2020 | JT launch | 3.6 Pentastar V6 | 285 hp / 260 lb-ft | Sport, Sport S, Overland, Rubicon, plus 4,190 Rubicon Launch Editions. Max Tow 7,650 lb. Mojave added mid-year. |
| 2021–2023 | JT | 3.6 V6 · 3.0 EcoDiesel V6 | 285 hp · 260 hp / 442 lb-ft | Diesel on all trims except Mojave; auto only; 6,500 lb tow. Willys, Willys Sport and 80th Anniversary editions; High Altitude returns for 2023. |
| 2023 | JT FarOut | 3.0 EcoDiesel V6 | 260 hp / 442 lb-ft | 1,000 Rubicon FarOut editions mark the end of the diesel. |
| 2024 | JT refresh | 3.6 Pentastar V6 | 285 hp / 260 lb-ft | Seven-slot grille, 12.3 in Uconnect 5, curtain airbags, Mojave X and Rubicon X, AEV packages. |
| 2025–2026 | JT | 3.6 Pentastar V6 | 285 hp / 260 lb-ft | Automatic only. 4xe cancelled. Sahara trim for 2026. |
Fluids, capacities & service intervals
Assume a used Gladiator has had oil changes and nothing else. Run the VIN through NHTSA's recall lookup first, then do the gear oils, transfer case and brake fluid, which owners most often skip. Fluid types below come from Mopar's specifications as compiled on JeepGladiatorForum and a 2021 owner's-manual excerpt posted there; engine capacities come from Stellantis's 2020 specification sheet. The EcoDiesel and Pentastar use different oils and filters.
| ITEM | SPEC / CAPACITY | INTERVAL | NOTES & PARTS |
|---|---|---|---|
| Engine oil & filter | 3.6: SAE 0W-20 full synthetic meeting MS-6395 · ≈5.7 qt (5.4 L) per the 2020 spec sheet · 3.0 EcoDiesel: confirm in manual | Baseline now; then per the oil-life monitor | The Pentastar uses a cartridge filter in a plastic housing; don't over-tighten the cap. Check the valley for housing leaks while you're there.Mopar 68507598AA engine oil filter, JL/JT · Quadratec ↗EcoDiesel oil filter catalog, 2021 Gladiator 3.0 · RockAuto ↗ |
| Engine air filter | Panel filter; Mopar 68257030AA on the 3.6 | Baseline now; more often in dust | Desert and trail dust load it quickly. The diesel uses a different element.Crown engine air filter, JL/JT · Quadratec ↗Crown 68293164AC air filter, JL/JT 3.0L diesel · Quadratec ↗ |
| Cabin air filter | Behind the glovebox; Mopar 68535621AA (gas) | Baseline now | Diesel trucks use a different part.Crown cabin air filter, JL/JT · Quadratec ↗Crown 68364653AA cabin air filter, JL/JT diesel · Quadratec ↗ |
| Spark plugs (3.6) | Mopar SP225755AA | Per the maintenance schedule confirm in manual | Ask for receipts; a used truck may be near its first plug change.Mopar SP225755AA spark plug, JL/JT 3.6L · Quadratec ↗ |
| Coolant | Mopar OAT (MS.90032 concentrate / MS-12106 pre-diluted) · 3.6: 10 qt (10.1 L) per the 2020 spec sheet | Inspect now; flush per schedule | Don't mix in older HOAT or green coolant. Pressure-test if the level drops.Mopar 68163849AB pre-diluted OAT coolant · Quadratec ↗ |
| 8-speed automatic (850RE / 8HP) | Mopar 68218925AB, a ZF-approved ATF (ZF LifeguardFluid 8/9 equivalent) · filter 68417054AB | Baseline if history is unknown; shop job | Not ATF+4. The level is set hot at the fill plug, so most owners leave it to a shop.Mopar 68218925AB ZF 8- and 9-speed ATF · Quadratec ↗ |
| 6-speed manual (D478) | Mopar ATF+4 (MS-9602) | Baseline now | Confirm the clutch recalls are done before you spend money here.Mopar ATF+4 · Quadratec ↗ |
| Transfer case | Mopar ATF+4 · about 2 qt (member report, confirm in manual) | Baseline now; sooner if you use low range a lot | Same fluid for Command-Trac, Rock-Trac and Selec-Trac.Mopar ATF+4 · Quadratec ↗ |
| Front axle (Dana 44) | Mopar 75W-85 GL-5 synthetic (MS-A0450, 68378949AB) | Baseline now; after any deep water crossing | Both axles together take about 4 qt by one member's count; fill to the bottom of the fill hole.Mopar 68378949AB gear lubricant 75W-85 · Quadratec ↗Dana Spicer Dana 44 differential cover, JL/JT · Quadratec ↗ |
| Rear axle (Dana 44) | 75W-85 GL-5 normally · 75W-140 synthetic (MS-8985, 68218657AB) for towing or heavy loads · friction modifier with Trac-Lok | Baseline now | Trucks that tow or carry heavy loads should run the 75W-140 that Mopar specifies for that use.Mopar 68218657AB axle lube 75W-140 · Quadratec ↗Yukon friction modifier additive · Quadratec ↗ |
| Power steering fluid | Mopar power steering fluid MS-11655 (68088485AB) | Check the level now | Check recall 26V-363 (2021–2025) before anything else.Crown 68252490AD power steering reservoir, JL/JT · Quadratec ↗ |
| Brake & clutch fluid | DOT 3 (DOT 4 acceptable), Mopar 04318080AD | Flush now; then every 2–3 years confirm in manual | Manual trucks share the fluid with the clutch hydraulics.Mopar DOT 3 brake fluid · Quadratec ↗ |
| Driveshafts & front end | U-joints, CV joints, tie-rod ends, track bars, ball joints | Inspect now and after every hard trail day | Re-torque track-bar and steering hardware after any lift.Dana Spicer driveshaft U-joint, JK/JL/JT · Quadratec ↗ |
Capability
| Towing | Up to 7,650 lb (3,470 kg) 2020 Sport Max Tow, automatic; Rubicon auto 7,000 lb; manuals 4,000–4,500 lb; EcoDiesel 6,500 lb (Rubicon 6,000 lb) |
|---|---|
| Payload | 1,105–1,700 lb (501–771 kg) 2020 spec sheet, by trim and gearbox; up to 1,720 lb quoted for 2026 |
| Fuel tank | 22 US gal (83 L) |
| Ground clearance | 10.0 in (253 mm) Sport · 11.1 in (283 mm) Rubicon · 11.6 in Mojave |
| Approach / departure / breakover | 43.4° / 26° / 20.3° (Rubicon) Sport 40.8° / 25° / 18.4°; Mojave 44.7° / 25.5° / 20.9° |
| Wading depth | 30 in (762 mm) |
| Fuel economy | EPA 17 city / 22 hwy (3.6 auto) 16/23 manual; EcoDiesel 22/28 (Rubicon 21/27) |
| Curb weight | 4,650–5,072 lb (2,109–2,301 kg) 2020 gas trucks; EcoDiesel about 300 lb heavier |
| Turning circle | 44.5–45.0 ft (13.6–13.7 m) curb to curb |
| Bed | 60.3 in long (81.3 in tailgate down), 44.8 in between wheelhouses |
Wheels & tires
| Factory tire | 245/75R17 (Sport, Sport S) · 255/70R18 (Overland) · LT285/70R17C (Rubicon, Mojave) |
|---|---|
| Bolt pattern | 5x127 (5x5") |
| Center bore | 71.5 mm |
| Lug thread | M14x1.5 |
| Biggest tire · Stock | 33 in (285/70R17) on Sport; 35x11.50R17 on Rubicon/Mojave |
| Biggest tire · 1 in front spacer + bump stops | 37 in (Rubicon) |
| Biggest tire · 2 in (AEV Upcountry, 2024+) | 35 in BFGoodrich KO2 |
Common Jeep Gladiator JT repairs
- Cure steering wobble: damper, track bar, steering boxDIFFICULTY 2 / 5
- Replace a leaking Pentastar oil filter housing / coolerDIFFICULTY 3 / 5
- Power steering: recall check, then hoses and reservoirDIFFICULTY 3 / 5
- EcoDiesel: fuel-pump recalls and fuel-filter serviceDIFFICULTY 2 / 5
- Manual trucks: clutch recall status, then clutch replacementDIFFICULTY 4 / 5
- Driveshafts: recall check and U-joint serviceDIFFICULTY 2 / 5
- Re-spring the rear for a real loadDIFFICULTY 2 / 5
Always confirm torque figures, fluids and capacities against the factory service manual for your VIN. See the disclaimer; some parts links are affiliate links.