Checked oil specs by engine
2025 Kia K4 oil capacity, type & filter
Multiple engine options are listed for the 2025 Kia K4. Select your engine below before buying oil or a filter.
| Engine | Capacity | Oil Type | Filter |
|---|---|---|---|
| 1.6L 4-Cyl Turbo | 5.1 qt | 0W-20 | WIX 51032 |
| 2.0L 4-Cyl | — | 0W-20 | AMSOIL 51458429 |
Match one of 2 checked engine options before buying oil or a filter.
WIX 51032 is copied into the checkout checklist below. Other listed filters are source-backed alternatives.
AMSOIL 51458429 is copied into the checkout checklist below. Other listed filters are source-backed alternatives.
Search paths only — confirm your OEM viscosity spec and quantity before checkout.
2025 Kia K4 oil specs: capacity conditions and filter notes
Check the door jamb sticker, owner's manual, or displacement badge on the engine cover. Match it to the engine options listed above before buying oil or a filter.
All listed filter part numbers are compatible alternatives for your vehicle. Choose any one brand, then confirm the exact part number at checkout.
Retailer fitment tools may use different data. Confirm oil capacity, viscosity, and filter part number before ordering.
Source coverage for the 2025 Kia K4
Supported by Pennzoil OATS, Valvoline Product Finder, and AMSOIL Lookup.
Supported by Pennzoil OATS, Valvoline Product Finder, AMSOIL Lookup, and Castrol (Olyslager).
Supported by RockAuto, Purolator Part Finder, and AMSOIL Lookup.
6 checked source rows for the 2025 Kia K4.
Before ordering for this 2025 Kia K4
- Capacity
- 5.1 qt
- Oil type
- 0W-20
- Interval
- 8,000 mi / 12 mo
- Filter
- WIX 51032
- Capacity
- Unverified
- Oil type
- 0W-20
- Interval
- 8,000 mi / 12 mo
- Filter
- AMSOIL 51458429
Source check: Last checked 2026-06-27 from AMSOIL Lookup, Pennzoil OATS, RockAuto, Purolator Part Finder, Valvoline Product Finder, and Castrol (Olyslager).
Kia K4 oil specs by year
This table includes checked Kia K4 model years available in our database.
No other published Kia K4 years are available yet.
How we verified 2025 Kia K4 oil data
How we verify fitmentChecked fitment data. Last checked: 2026-06-27.
This page checked 6 sources for the 2025 Kia K4. The table lists which checked source contributed capacity, oil type, or filter evidence.
We checked leading oil brands and aftermarket filter catalogs so you don't have to.
- Confidence
- Verified fit
- Sources checked
- 6
- Last checked
- 2026-06-27
- Capacity: Pennzoil OATS, Valvoline Product Finder, and AMSOIL Lookup
- Oil type: Pennzoil OATS, Valvoline Product Finder, AMSOIL Lookup, and Castrol (Olyslager)
- Filter: RockAuto, Purolator Part Finder, and AMSOIL Lookup
- Change interval: Pennzoil OATS, Valvoline Product Finder, AMSOIL Lookup, and Castrol (Olyslager)
| Source | Supports | Checked | Link |
|---|---|---|---|
| AMSOIL Lookup | Capacity, Oil type, Filter | 2026-06-27 | Visit brand site |
| Pennzoil OATS | Capacity, Oil type | 2026-06-27 | Visit brand site |
| RockAuto | Filter | 2026-06-27 | Checked source |
| Purolator Part Finder | Filter | 2026-06-27 | Visit brand site |
| Valvoline Product Finder | Capacity, Oil type | 2026-06-27 | Checked source |
| Castrol (Olyslager) | Oil type | 2026-06-27 | Visit brand site |
2025 Kia K4 oil FAQ
Which engine configuration applies to my vehicle?
Use the door jamb sticker, owner's manual, or engine cover badge to identify your engine, then match it to the engine options listed above.
Is the oil capacity measured with or without the filter?
Capacity condition matters. With filter includes a new filter. Service fill is the typical drain-and-fill amount. Dry fill is for a fresh empty engine only.
Why should I confirm before buying?
Retailer catalogs can update separately. Confirm the exact 2025 Kia K4 selector at checkout before you buy.
Do I also need to match the OEM oil approval?
Yes. Viscosity is only one part of the oil spec. Match the oil approval listed in your owner's manual or on the bottle before checkout.
How often should I change the oil on a 2025 Kia K4?
Change intervals vary by engine option for this vehicle. Always follow your owner's manual and oil-life monitor. Severe service may require a shorter interval.
Do I need a new drain plug gasket?
Replace it when your vehicle uses a serviceable gasket or crush washer. Confirm the gasket size and drain plug torque from the service manual or parts counter.
2025 Kia K4 maintenance checklist
One part checked. Look up the rest while you're here.
- Cabin air filter 2025 Kia K4 cabin filter part numbers
- Engine air filter 2025 Kia K4 engine filter part numbers
- Wiper blade size 2025 Kia K4 driver & passenger blade sizes
- Oil type & capacity 0W-20 · 5.1 qt Checked
Where to buy
These are retailer search paths for your vehicle's oil and filter specs. Verify final fitment at checkout.
This section may include affiliate or sponsored retailer links. They are purchase paths, not fitment evidence.
Walmart
Compare oil and filter listings for the 2025 Kia K4. Confirm capacity, viscosity, and filter part number before checkout.
Search 2025 Kia K4 oil & filter →AutoZone
Use AutoZone's vehicle selector for the 2025 Kia K4 before checkout to confirm oil capacity, viscosity, and filter fitment.
Search 2025 Kia K4 oil & filter →Amazon
Search Amazon listings for the 2025 Kia K4 and check listing fitment notes against the specs above.
Search 2025 Kia K4 oil & filter →O'Reilly
Open O'Reilly's fitment search for the 2025 Kia K4 and verify oil capacity, viscosity, and filter part number before ordering.
Search 2025 Kia K4 oil & filter →Look up another vehicle
Find checked oil capacity, type, and filter data by exact year, make, and model.