3.6L V6 Pentastar
- Oil viscosity
- 0W-20
- Oil capacity
- 5 qt with filter
- Oil spec
- API SN Plus, MS-6395
- Timing drive
- Chain, no scheduled service
- Spark plugs
- Iridium
- Coolant
- Mopar 10-year OAT (purple)
JL (2018 to present)
2018 Jeep Wrangler Maintenance Schedule
Enter the current mileage to see what needs attention, then use the milestones below to plan the work ahead.
Review status Aug 11, 2026 Verification against the printed manual in progress
BodySUV / Convertible
Drive4WD
Transmission6-speed manual / 8-speed automatic (850RE)
Engines2 available
01 / Full schedule
Service points by mileage
Grouped the way a service booklet reads. Costs are broad national shop ranges; severe use shortens the intervals shown in that column.
| Service item | Action | Normal interval | Severe use | Shop range | DIY |
|---|---|---|---|---|---|
| Tire rotation | Rotate | Every 8,000 mi | Same | $25 to $60 | Light |
| Service item | Action | Normal interval | Severe use | Shop range | DIY |
|---|---|---|---|---|---|
| Engine oil | Replace | 10,000 mi / 12 mo | 4,000 mi / 6 mo | $65 to $125 | Light |
| Front brake pads | Inspect | 10,000 mi / 12 mo | Same | $150 to $320 | Moderate |
| Oil filter | Replace | 10,000 mi / 12 mo | 4,000 mi / 6 mo | Included in service | Light |
| Rear brake pads | Inspect | 10,000 mi / 12 mo | Same | $150 to $320 | Moderate |
| Service item | Action | Normal interval | Severe use | Shop range | DIY |
|---|---|---|---|---|---|
| Brake lines and hoses | Inspect | 15,000 mi / 12 mo | Same | Up to $60 | Light |
| Suspension and steering inspection | Inspect | 15,000 mi / 12 mo | Same | Up to $90 | Light |
| Service item | Action | Normal interval | Severe use | Shop range | DIY |
|---|---|---|---|---|---|
| Cabin air filter | Replace | 20,000 mi / 24 mo | Same | $45 to $95 | Easy |
| Service item | Action | Normal interval | Severe use | Shop range | DIY |
|---|---|---|---|---|---|
| Engine air filter | Replace | Every 30,000 mi | 15,000 mi | $35 to $75 | Easy |
| Shocks and struts | Inspect | Every 30,000 mi | Same | $600 to $1400 | Involved |
| Service item | Action | Normal interval | Severe use | Shop range | DIY |
|---|---|---|---|---|---|
| Manual transmission fluid | Replace | Every 60,000 mi | Same | $100 to $180 | Moderate |
| Serpentine belt | Inspect | First at 60,000 mi, then every 15,000 mi | Same | $90 to $200 | Light |
| Service item | Action | Normal interval | Severe use | Shop range | DIY |
|---|---|---|---|---|---|
| Spark plugs | Replace | Every 100,000 mi | Same | $150 to $420 | Moderate |
| Service item | Action | Normal interval | Severe use | Shop range | DIY |
|---|---|---|---|---|---|
| Front differential fluid | Replace | Every 120,000 mi | 40,000 mi | $70 to $140 | Moderate |
| Rear differential fluid | Replace | Every 120,000 mi | 40,000 mi | $70 to $140 | Moderate |
| Transfer case fluid | Replace | Every 120,000 mi | 60,000 mi | $75 to $150 | Moderate |
| Service item | Action | Normal interval | Severe use | Shop range | DIY |
|---|---|---|---|---|---|
| Engine coolant | Replace | 150,000 mi / 120 mo | Same | $130 to $260 | Moderate |
| Service item | Action | Normal interval | Severe use | Shop range | DIY |
|---|---|---|---|---|---|
| Battery | Test | Every 12 mo | Same | $160 to $320 | Light |
| Battery terminal cleaning | Clean | Every 12 mo | Same | Up to $40 | Easy |
| Brake fluid | Inspect | Every 12 mo | Same | $90 to $160 | Moderate |
| Tire pressure | Inspect | Every 1 mo | Same | Up to $10 | Easy |
| Washer fluid | Inspect | Every 1 mo | Same | Up to $10 | Easy |
| Wiper blades | Inspect | Every 6 mo | Same | $30 to $80 | Easy |
| Service item | Action | Normal interval | Severe use | Shop range | DIY |
|---|---|---|---|---|---|
| Automatic transmission fluid | Replace | No scheduled change | 60,000 mi | $150 to $320 | Moderate |
Time limits still apply when you drive fewer miles than the interval. Calendar-based items are listed in their own group above.
02 / Engine and fluids
The specs people need at the parts counter
Confirm the engine before buying fluids, filters, or ignition parts. Capacities and specs differ between them.
2.0L I4 Turbo eTorque
- Oil viscosity
- 5W-30
- Oil capacity
- 5 qt with filter
- Oil spec
- API SN Plus, MS-12633
- Timing drive
- Chain, no scheduled service
- Spark plugs
- Iridium
- Coolant
- Mopar 10-year OAT (purple)
Common tire sizes 245/75R17255/70R18285/70R17
03 / The year in context
What this schedule asks of you
The 2018 Wrangler JL keeps the Pentastar V6, adds a 2.0L turbo with the eTorque system, and pairs both with a 6-speed manual or 8-speed automatic. Oil follows the change indicator with a 10,000-mile ceiling, coolant runs ten years, and the driveline carries the usual Jeep set of axle and transfer case fluids on trail-ready intervals.
The ownership caveat specific to early JLs is steering feel. Enough 2018 and 2019 trucks wandered that revised dampers and steering boxes flowed through warranty channels, so a used example that drifts deserves a service-history lookup before parts get thrown at it.
The two engines split on fluids: 0W-20 for the V6 and 5W-30 for the turbo four, matching capacities but different specs. Everything else on the schedule reads Jeep as usual, with severe intervals doing the real work on any truck that sees dirt or water.
SEV
Shorter intervals
Do you use the severe schedule?
Frequent short trips, towing, dusty roads, extreme temperatures, and long idling shorten the intervals. The severe column in the table above shows by how much; the toggle in the mileage check applies it.
Check severe-use timing04 / Worth knowing
Before you book service
- 01
Early JL steering drew wander complaints that led to revised steering dampers and boxes under warranty programs. A JL that will not track straight deserves a dealer history check before aftermarket guesswork.
- 02
The 3.6L dropped to 0W-20 and five quarts in the JL, both different from the same engine in the JK. The 2.0L turbo takes 5W-30 and its own spec; do not cross-shop the two.
- 03
The JL added a cabin air filter, which the JK never had.
- 04
Water and mud rules carry over: any submerged driveline component gets fresh fluid immediately, and trail Jeeps live on the severe intervals.
- 05
For 2018 the outgoing JK sold alongside this JL. Two different Wranglers share the model year; the VIN settles which schedule applies.
05 / Cost outlook
What routine service may cost
Estimated from this schedule over five years or 60,000 miles of normal driving. Parts, labor rates, location, and condition all move the total; treat these as planning figures.
5 years / 60K at a shop $870 to $2,000 Independent shop rates
DIY parts estimate $310 to $850 Routine items only
Some links below are affiliate links. If you buy through them, this site earns a commission at no extra cost to you. See the full disclosure.
Find parts for this Wrangler
- Engine oilAmazon AutoZone O'Reilly Auto Parts
- Engine air filterAmazon AutoZone O'Reilly Auto Parts
- Cabin air filterAmazon AutoZone O'Reilly Auto Parts
- Wiper bladesAmazon AutoZone O'Reilly Auto Parts
- Front brake padsAmazon AutoZone O'Reilly Auto Parts
- BatteryAmazon AutoZone O'Reilly Auto Parts
08 / Common questions
2018 Wrangler service answers
01 How often does a 2018 Jeep Wrangler need an oil change?
The published interval is every 10,000 miles or 12 months, whichever comes first. Under severe conditions such as short trips, towing, dust, or extreme temperatures, the interval drops to 4,000 miles.
02 Does the 2018 Jeep Wrangler have a timing belt or a timing chain?
Every available engine, the 3.6L V6 Pentastar and the 2.0L I4 Turbo eTorque, uses a timing chain. There is no scheduled timing belt replacement.
03 What oil does the 2018 Jeep Wrangler take, and how much?
3.6L V6 Pentastar: 0W-20, 5 quarts with filter. 2.0L I4 Turbo eTorque: 5W-30, 5 quarts with filter. Confirm the grade printed in the owner's manual before buying.
04 When do the spark plugs need to be replaced on a 2018 Jeep Wrangler?
The schedule calls for spark plugs every 100,000 miles. Both engines list long-life iridium plugs; hard trail duty justifies an earlier look.
05 Does the 2018 Jeep Wrangler ever need automatic transmission fluid changes?
The factory schedule lists no automatic transmission fluid change under normal driving, but the severe schedule calls for one at 60,000 miles. The 8-speed is sold as lifetime fill. ZF, who builds it, suggests fresh fluid near 60,000 to 80,000 miles for hard use, and the severe schedule agrees.
06 When does the 2018 Jeep Wrangler need a coolant change?
Engine coolant is due every 150,000 miles. The specified coolant is Mopar 10-year OAT (purple).
07 What extra maintenance does the 4WD Wrangler need?
The driveline adds its own fluids: differential gear oil and, where fitted, transfer case fluid. They are inexpensive services with long intervals under normal use, and much shorter ones under towing or off-road duty. The schedule table lists each with its interval.
08 What counts as severe service for the 2018 Jeep Wrangler?
Repeated trips under about five miles, extended idling, stop-and-go traffic in heat, dusty or gravel roads, towing, and sustained sub-freezing starts. If a few of those describe a typical week, use the severe column in the table above; most manufacturers write their fine print around exactly that kind of driving.
09 / Sources
Where this schedule came from
- 2018 Jeep Wrangler Owner's Manual, maintenance section Accessed 2026-08-11
- 2018 Jeep Wrangler User Guide, maintenance plan Accessed 2026-08-11
Reference only. Confirm the schedule for your exact vehicle in the owner's manual. This site is not affiliated with Jeep or any manufacturer.
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