3.6L V6 Pentastar
- Oil viscosity
- 5W-20
- Oil capacity
- 6 qt with filter
- Oil spec
- API SN, MS-6395
- Timing drive
- Chain, no scheduled service
- Spark plugs
- Iridium
- Coolant
- Mopar 10-year OAT (purple)
JK (2007 to 2018)
2015 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 (NSG370) / 5-speed automatic (W5A580)
Engines3.6L V6 Pentastar
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 |
|---|---|---|---|---|---|
| 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 |
|---|---|---|---|---|---|
| Automatic transmission fluid | Replace | Every 60,000 mi | 30,000 mi | $150 to $320 | Moderate |
| 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 |
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
Capacities and specs for the one engine offered this year.
Common tire sizes 225/75R16255/75R17255/70R18
03 / The year in context
What this schedule asks of you
The 2015 Wrangler JK runs the 3.6L Pentastar with a 6-speed manual or 5-speed automatic and a schedule built for a vehicle that might actually leave pavement. Oil follows the indicator to a 10,000-mile ceiling, plugs run to 100,000, and coolant holds a ten-year clock.
What separates Wrangler maintenance from every crossover on this site is the driveline. Two solid axles, a transfer case, and a gearbox all carry their own fluids, all cheap, all critical after water or mud. The severe schedule is not a lawyer paragraph here; it is the actual schedule for a Jeep used as intended.
The steering inspection deserves equal billing. JK front ends telegraph wear through wander and shimmy, and the fix is almost always a bolt-on part caught by the yearly suspension check rather than a crisis on the highway.
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
Water crossings rewrite this schedule. Any axle, transfer case, or gearbox that has been submerged needs its fluid changed immediately, not at the next milestone.
- 02
Front-end shimmy after a bump, the death wobble owners describe, is worn steering components, most often the track bar. The suspension inspection on this schedule is the line that catches it early.
- 03
The JK has no cabin air filter, so none appears here.
- 04
Solid axles both ends mean fluid changes are cheap and fast; the severe intervals exist because trail Jeeps genuinely need them.
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 $890 to $2,000 Independent shop rates
DIY parts estimate $310 to $820 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
- Wiper bladesAmazon AutoZone O'Reilly Auto Parts
- Front brake padsAmazon AutoZone O'Reilly Auto Parts
- BatteryAmazon AutoZone O'Reilly Auto Parts
08 / Common questions
2015 Wrangler service answers
01 How often does a 2015 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 2015 Jeep Wrangler have a timing belt or a timing chain?
The 3.6L V6 Pentastar uses a timing chain, so there is no scheduled timing belt replacement.
03 What oil does the 2015 Jeep Wrangler take, and how much?
3.6L V6 Pentastar: 5W-20, 6 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 2015 Jeep Wrangler?
The schedule calls for spark plugs every 100,000 miles.
05 Does the 2015 Jeep Wrangler ever need automatic transmission fluid changes?
Plan on automatic transmission fluid every 60,000 miles, or 30,000 miles under severe use. The W5A580 automatic uses ATF+4 and appreciates fluid far more often than lifetime marketing suggests, especially off-road.
06 When does the 2015 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 2015 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
- 2015 Jeep Wrangler Owner's Manual, maintenance section Accessed 2026-08-11
- 2015 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.
Report an error on this page CSD / REM 01
One service reminder
Own a 2015 Wrangler?
One email when your next service is coming up. Nothing else.