Complete Oil Specifications
Your 2022 Kia Rio with the 1.6L Gamma II engine requires 5W-30 full synthetic oil meeting API SP and ILSAC GF-6A standards.
Quick Reference
| Specification | Value |
|---|---|
| Viscosity | 5W-30 |
| API Rating | API SP |
| ILSAC Rating | GF-6A |
| Capacity (with filter) | 3.5 quarts |
| Oil Filter | Kia 26300-35503 |
| Normal Interval | 7500 miles |
Why 5W-30 is Critical for This Engine
The 1.6L Gamma II uses Multi-Point Injection and a continuously variable valve timing (CVVT) system that depends on consistent oil pressure and flow. The 5W-30 viscosity provides quick cold-start lubrication in the CVVT actuators while maintaining a stable film at operating temperature, protecting the engine at highway speeds.
Using incorrect oil will:
- ❌ Cause sluggish CVVT response, leading to rough idle and reduced fuel efficiency
- ❌ Increase wear on the timing chain tensioner from inadequate cold-start pressure
- ❌ Risk failing API SP’s LSPI protection requirement for direct-injection engines
Kia-Approved Oil Brands
-
✅ Kia Genuine Motor Oil 5W-30
-
✅ Mobil 1 Advanced Full Synthetic 5W-30
-
✅ Castrol Edge Full Synthetic 5W-30
-
✅ Pennzoil Platinum Full Synthetic 5W-30
-
✅ Valvoline Advanced Full Synthetic 5W-30
Always look for the API SP starburst symbol and ILSAC GF-6A designation on the bottle.
Severe Service Check
You need the 3750-mile interval if you:
- Drive mostly short trips under 5 miles where the engine never fully warms up
- Idle frequently in traffic or drive-through queues
- Drive in dusty or unpaved conditions
- Operate in extreme temperatures (below 0°F or above 90°F regularly)
Installation Details
Drain Plug Torque: 26 ft-lbs
Replace the copper crush washer every oil change to prevent slow seepage.
OEM Filter: Kia 26300-35503
Aftermarket Filters:
-
Wix 57145
-
Fram PH3593A
-
K&N HP-1004
Pro Tip: The spin-on filter is located on the side of the block — use a proper filter wrench to avoid denting the canister and contaminating the new oil.
FAQs
What oil does a 2022 Kia Rio 1.6L take?
5W-30 full synthetic oil meeting API SP and ILSAC GF-6A.
How many quarts does it need?
3.5 quarts with a new filter.
Can I use 5W-20 instead of 5W-30?
No. The Gamma II 1.6L is specified for 5W-30 only. Using a thinner viscosity reduces the protective film at operating temperature.
Is synthetic oil required?
Yes. Full synthetic is required to meet the SP rating and to handle Kia’s extended 7,500-mile interval.
How often should I change the oil?
Every 7500 miles or 12 months for normal driving; every 3750 miles or 6 months under severe conditions.
Need these specs on your phone? Download OilFinderPro app for offline access and oil change reminders.
Last verified: 2026-04-17 | Source: 2022 Kia Rio Owner’s Manual