Jeep Gladiator Maintenance Schedule

Jeep Gladiator generations, and why the schedule changes

JT generation (pre-refresh) (2020-2023)

3.6L Pentastar V6, or 3.0L EcoDiesel V6 (2021-2023 only, automatic-only)

Oil: 0W-20 full synthetic on the Pentastar, 5W-40 full synthetic on the EcoDiesel. Interval: 10,000 miles (3.6L) / 8,000 miles (3.0L EcoDiesel).

Front and rear Dana 44 AdvanTEK axle fluid and transfer case fluid at 60,000 miles, sooner after water crossings
Spark plugs at 100,000 miles on the Pentastar (6 plugs, one per cylinder)
EcoDiesel adds a DEF tank, a diesel-specific fuel filter, and a shorter oil interval than the gas truck

JT generation (refreshed) (2024 onward)

3.6L Pentastar V6 only

Oil: 0W-20 full synthetic. Interval: 10,000 miles.

New grille, front bumper, taillights, and 12.3-in Uconnect 5 touchscreen for 2024 - no mechanical changes
D478 6-speed manual offered through 2024 only, then dropped for 2025 (automatic-only from 2025 forward)
Front and rear Dana 44 AdvanTEK axle fluid and transfer case fluid at 60,000 miles, sooner after water crossings

Quick specs - Jeep Gladiator 2020-2026

Engine	2020: 3.6L Pentastar V6 (285 hp / 260 lb-ft) - the only engine offered this year 2021: 3.6L Pentastar V6 (285 hp / 260 lb-ft) or 3.0L EcoDiesel V6 (260 hp / 442 lb-ft, new this year, automatic-only) 2022: 3.6L Pentastar V6 (285 hp / 260 lb-ft) or 3.0L EcoDiesel V6 (260 hp / 442 lb-ft, automatic-only) 2023: 3.6L Pentastar V6 (285 hp / 260 lb-ft) or 3.0L EcoDiesel V6 (260 hp / 442 lb-ft, automatic-only) - final year for the diesel 2024: 3.6L Pentastar V6 (285 hp / 260 lb-ft) - the only engine offered from this year on 2025-2026: 3.6L Pentastar V6 (285 hp / 260 lb-ft)
Oil type	2020, 2024-2026: 0W-20 Full Synthetic, MS-6395 spec (3.6L Pentastar) 2021-2023: 0W-20 Full Synthetic, MS-6395 spec (3.6L Pentastar); 5W-40 Full Synthetic (3.0L EcoDiesel)
Oil capacity	2020: 5 qts with filter (3.6L Pentastar) 2021-2023: 5 qts with filter (3.6L Pentastar) / 9.0 qts (3.0L EcoDiesel) 2024-2026: 5 qts with filter (3.6L Pentastar) - the 6-quart figure in some guides is the older Pentastar Classic, not this engine
Transmission	2020: 6-speed manual (D478, standard) / 8-speed automatic ZF 850RE (optional) - both 3.6L Pentastar only 2021-2023: 6-speed manual (D478) / 8-speed automatic ZF 850RE (3.6L Pentastar); 8-speed automatic ZF 8HP75 only (3.0L EcoDiesel) 2024: 6-speed manual (D478) / 8-speed automatic ZF 850RE (3.6L Pentastar) 2025: 8-speed automatic ZF 850RE only (3.6L Pentastar) - the D478 manual was discontinued for this model year 2026: 8-speed automatic ZF 850RE (3.6L Pentastar) - no manual offered
Transmission fluid	2020, 2024-2026: Mopar ZF 8&9 Speed ATF (850RE automatic); Mopar ATF+4 (D478 manual - Jeep's fluid table names ATF+4, not gear oil) 2021-2023: Mopar ZF 8&9 Speed ATF (850RE and 8HP75 automatics); Mopar ATF+4 (D478 manual - Jeep's fluid table names ATF+4, not gear oil)
Coolant	Mopar OAT (Organic Additive Technology) - purple/violet HOAT spec MS-12106

Jeep Gladiator 2020-2026 maintenance schedule

Each model year's source document is named under "by model year" below. A row or service that only some years have names those years.

Interval	Service
Every 4,000 mi (severe duty / off-road)	Engine oil & filter change Rotate tires Inspect axle vents, skid plates, and undercarriage Inspect for off-road damage
Every 8,000 mi / 12 months (3.0L EcoDiesel) (2021-2023 only)	Engine oil & filter change (5W-40 full synthetic) Replace fuel filter (every other oil change, roughly 16,000 mi) Inspect DEF system and top off as needed
Every 10,000 mi / 12 months	Engine oil & filter change (0W-20 3.6L Pentastar) Rotate tires Inspect brakes, steering, and suspension Inspect ball joints and track bar
Every 20,000 mi	Replace cabin air filter Inspect brake pads and rotors Inspect CV joints and driveshafts
Every 30,000 mi	Replace engine air filter Inspect drive belt Inspect coolant condition and hoses
Every 36 months (brake fluid)	Replace brake fluid (DOT 3)
Every 100,000 mi	Replace spark plugs (3.6L Pentastar, 6 plugs) Inspect PCV valve Inspect water pump
Every 120,000 mi	Inspect valvetrain
Every 150,000 mi	Engine coolant flush (Mopar OAT / HOAT) Inspect entire cooling system
First at 20,000 mi, then every 40,000 mi (60,000, 100,000 and 140,000 mi)	Inspect the front and rear axle fluid
Every 40,000 mi (severe use: police, taxi, fleet, off-road or frequent trailer towing)	Change the front and rear axle fluid
First at 30,000 mi, then every 60,000 mi (90,000 and 150,000 mi)	Inspect the transfer case fluid
Every 60,000 mi (severe use: police, taxi, fleet or frequent trailer towing)	Change the transfer case fluid
Every 30,000 mi (severe use: towing, snow plowing, heavy loads, commercial or police/taxi use, off-road, desert, or mostly sustained high speed above 90F) (2020-2024 only)	Change the manual transmission fluid
Every 20,000 mi (3.0L EcoDiesel) (2021-2023 only)	Inspect the front and rear axle fluid - change it for police, taxi, fleet, off-road or frequent trailer towing
Every 30,000 mi (3.0L EcoDiesel) (2021 only)	Inspect the transfer case fluid (at 30,000, 60,000, 90,000 and 150,000 mi)
At 120,000 mi (3.0L EcoDiesel) (2021 only)	Change the transfer case fluid

When to replace each part - Jeep Gladiator 2020-2026

The schedule above is organized by mileage. This is the same information organized by part, for when you already know what you are replacing and just need the interval.

Engine oil & filter	2020, 2024-2026: Every 10,000 mi / 12 months (3.6L Pentastar) - severe duty (trail, sand, mud, towing, short trips) roughly halves it to 4,000-5,000 mi 2021-2023: Every 10,000 mi / 12 months (3.6L Pentastar); 8,000 mi / 12 months (3.0L EcoDiesel) - severe duty (trail, sand, mud, towing, short trips) roughly halves both to 4,000-5,000 mi
Transmission fluid	2020-2024: Automatic (ZF eight-speed): factory fill for the life of the vehicle - Jeep's manual says "Routine fluid and filter changes are not required." Change the fluid and filter only if it becomes contaminated (with water, for example) or the transmission is taken apart. Manual: no normal-duty change - every 30,000 mi only under severe use (towing, snow plowing, heavy loads, commercial use, off-road, desert, or mostly sustained high speed in heat) 2025-2026: Automatic (ZF eight-speed): factory fill for the life of the vehicle - Jeep's manual says "Routine fluid and filter changes are not required." Change the fluid and filter only if it becomes contaminated (with water, for example) or the transmission is taken apart
Coolant	First flush at 150,000 mi, then every 100,000 mi

Parts and shopping options for the Jeep Gladiator 2020-2026

Part	Fitment note	Buy
Mopar 68301863AA Cabin Air Filter	Same cabin filter as the JL Wrangler (2018+) - not independently confirmed against a JT-specific catalog	Compare options on Amazon
Mopar 68163849AB 10yr/150k OAT Coolant 50/50 (1 gal)	Use only Mopar OAT purple/violet - do not mix coolant types	View product on Amazon Compare coolant for the 2020-2026 Jeep Gladiator on Amazon
Mopar 75W-90 GL-5 Manual Transmission/Gear Oil (1 qt)	For the D478 6-speed manual (2020-2024) and the Dana 44 AdvanTEK front/rear axles	Compare options on Amazon
Chrysler 4318080AD Mopar DOT 3 Brake Fluid (12 oz)	Time-based change every 36 months regardless of mileage	View product on Amazon Compare DOT 3 brake fluid for the 2020-2026 Jeep Gladiator on Amazon

Affiliate Disclosure: ServiceSage Auto participates in the Amazon Services LLC Associates Program. We earn a small commission from qualifying purchases at no extra cost to you. This helps us keep our content free and up-to-date.

Jeep Gladiator 2020-2026 torque specs

Lug nut	130 ft-lbs (176 Nm) (21mm socket)

Torque specs via WhatSizeBolt.

How to reset the oil life / maintenance light - Jeep Gladiator

Accelerator pedal-pump (works on JK, JL Wrangler, and RAM 1500)

Ignition to ON/RUN, engine off (do not start).
Fully press the accelerator to the floor and fully release it, 3 times, within about 10 seconds.
Turn the ignition off, then start the engine and confirm the oil-change message is gone.

EVIC / Uconnect menu

Older EVIC (JK Wrangler, older RAM): steering-wheel arrows to Vehicle Info, then Oil Life, then press and hold OK/right-arrow and confirm Yes/OK.
Newer Uconnect touchscreen (JL Wrangler 2018+, RAM 1500 5th-gen/DT 2019+): Apps or Settings, then Vehicle Info, then Oil Life, then hold Reset until it reads 100%.

Jeep Gladiator by model year

Each model year's own record: the manual its schedule comes from, and what NHTSA and the EPA list for that year.

2020 Jeep Gladiator

Maintenance schedule source: Jeep Gladiator owner's manual (Mopar) and Stellantis specifications

Recalls

NHTSA lists 7 recalls for the 2020 Jeep Gladiator:

Campaign	Report date	Component
24V652000	2024-09-05	electrical system
23V116000	2023-02-23	power train
21V028000	2021-01-28	power train
20V580000	2020-09-24	seat belts
20V191000	2020-09-10	back over prevention
20V124000	2020-03-03	power train
19V636000	2019-08-29	power train

Owner complaints

NHTSA has 483 owner complaints on file for the 2020 Jeep Gladiator. Top component areas reported:

electrical system: 183
steering: 181
power train: 54

Powertrains

EPA lists these powertrains for 2020:

Engine	Transmission	Fuel
3.6 L 6 cyl	Auto 8-spd	Gasoline
3.6 L 6 cyl	Man 6-spd	Gasoline

Source: NHTSA recalls, NHTSA owner complaints, EPA fueleconomy.gov; fetched 2026-10-12.

2021 Jeep Gladiator

Maintenance schedule source: Jeep Gladiator owner's manual (Mopar) and Stellantis specifications

Recalls

NHTSA lists 8 recalls for the 2021 Jeep Gladiator:

Campaign	Report date	Component
26V363000	2026-06-04	steering
24V652000	2024-09-05	electrical system
24V572000	2024-08-01	power train
23V263000	2023-04-13	fuel system, diesel
23V116000	2023-02-23	power train
22V767000	2022-10-13	fuel system, gasoline
22V638000	2022-08-25	back over prevention
21V028000	2021-01-28	power train

Owner complaints

NHTSA has 292 owner complaints on file for the 2021 Jeep Gladiator. Top component areas reported:

steering: 94
power train: 71
engine: 53

Powertrains

EPA lists these powertrains for 2021:

Engine	Transmission	Fuel
3.0 L 6 cyl turbo	Auto 8-spd	Diesel
3.6 L 6 cyl	Auto 8-spd	Gasoline
3.6 L 6 cyl	Man 6-spd	Gasoline

Source: NHTSA recalls, NHTSA owner complaints, EPA fueleconomy.gov; fetched 2026-10-12.

2022 Jeep Gladiator

Maintenance schedule source: Jeep Gladiator owner's manual (Mopar) and Stellantis specifications

Recalls

NHTSA lists 8 recalls for the 2022 Jeep Gladiator:

Campaign	Report date	Component
26V363000	2026-06-04	steering
24V652000	2024-09-05	electrical system
23V641000	2023-09-18	power train
23V263000	2023-04-13	fuel system, diesel
23V116000	2023-02-23	power train
22V766000	2022-10-13	seat belts
22V767000	2022-10-13	fuel system, gasoline
22V639000	2022-08-25	power train

Owner complaints

NHTSA has 120 owner complaints on file for the 2022 Jeep Gladiator. Top component areas reported:

steering: 36
electrical system: 32
power train: 21

Powertrains

EPA lists these powertrains for 2022:

Engine	Transmission	Fuel
3.0 L 6 cyl turbo	Auto 8-spd	Diesel
3.6 L 6 cyl	Auto 8-spd	Gasoline
3.6 L 6 cyl	Man 6-spd	Gasoline

Source: NHTSA recalls, NHTSA owner complaints, EPA fueleconomy.gov; fetched 2026-10-12.

2023 Jeep Gladiator

Maintenance schedule source: Jeep Gladiator owner's manual (Mopar) and Stellantis specifications

Recalls

NHTSA lists 6 recalls for the 2023 Jeep Gladiator:

Campaign	Report date	Component
26V363000	2026-06-04	steering
24V652000	2024-09-05	electrical system
24V199000	2024-03-14	air bags
23V641000	2023-09-18	power train
23V263000	2023-04-13	fuel system, diesel
23V116000	2023-02-23	power train

Owner complaints

NHTSA has 57 owner complaints on file for the 2023 Jeep Gladiator. Top component areas reported:

electrical system: 15
suspension: 12
steering: 10

Powertrains

EPA lists these powertrains for 2023:

Engine	Transmission	Fuel
3.0 L 6 cyl turbo	Auto 8-spd	Diesel
3.6 L 6 cyl	Auto 8-spd	Gasoline
3.6 L 6 cyl	Man 6-spd	Gasoline

Source: NHTSA recalls, NHTSA owner complaints, EPA fueleconomy.gov; fetched 2026-10-12.

2024 Jeep Gladiator

Maintenance schedule source: Jeep Gladiator owner's manual (Mopar) and Stellantis specifications

Recalls

NHTSA lists 2 recalls for the 2024 Jeep Gladiator:

Campaign	Report date	Component
26V363000	2026-06-04	steering
24V652000	2024-09-05	electrical system

Owner complaints

NHTSA has 23 owner complaints on file for the 2024 Jeep Gladiator. Top component areas reported:

electrical system: 8
steering: 7
engine: 3

Powertrains

EPA lists these powertrains for 2024:

Engine	Transmission	Fuel
3.6 L 6 cyl	Auto 8-spd	Gasoline
3.6 L 6 cyl	Man 6-spd	Gasoline

Source: NHTSA recalls, NHTSA owner complaints, EPA fueleconomy.gov; fetched 2026-10-12.

2025 Jeep Gladiator

Maintenance schedule source: Jeep Gladiator owner's manual (Mopar) and Stellantis specifications

Recalls

NHTSA lists 1 recall for the 2025 Jeep Gladiator:

Campaign	Report date	Component
26V363000	2026-06-04	steering

Owner complaints

NHTSA has 15 owner complaints on file for the 2025 Jeep Gladiator. Top component areas reported:

electrical system: 4
fuel/propulsion system: 3
vehicle speed control: 3

Powertrains

EPA lists these powertrains for 2025:

Engine	Transmission	Fuel
3.6 L 6 cyl	Auto 8-spd	Gasoline

Source: NHTSA recalls, NHTSA owner complaints, EPA fueleconomy.gov; fetched 2026-10-12.

2026 Jeep Gladiator

Maintenance schedule source: Jeep Gladiator owner's manual (Mopar) and Stellantis specifications

Recalls

NHTSA lists 2 recalls for the 2026 Jeep Gladiator:

Campaign	Report date	Component
26V531000	2026-08-13	back over prevention
26V456000	2026-07-16	wheels

Owner complaints

NHTSA has 3 owner complaints on file for the 2026 Jeep Gladiator. Top component areas reported:

electrical system: 1
engine: 1
service brakes: 1

Powertrains

EPA lists these powertrains for 2026:

Engine	Transmission	Fuel
3.6 L 6 cyl	Auto 8-spd	Gasoline

Source: NHTSA recalls, NHTSA owner complaints, EPA fueleconomy.gov; fetched 2026-10-12.