Complete Oil Specifications
Your 2022 Subaru Outback 2.5L naturally aspirated engine requires 0W-20 full synthetic oil that meets API SP and ILSAC GF-6A standards.
Quick Reference
| Specification | Value |
|---|---|
| Viscosity | 0W-20 |
| API Rating | API SP |
| ILSAC Rating | GF-6A |
| Capacity (with filter) | 4.4 quarts |
| Oil Filter | Subaru 15208AA21A |
| Normal Interval | 6000 miles |
Why 0W-20 is Critical for This Engine
Subaru’s horizontally opposed “Boxer” engine design places unique demands on engine lubrication. A 0W-20 synthetic oil flows quickly upon a cold start to reach all four horizontally placed cylinders, reducing wear on the piston rings and cylinder walls while maximizing fuel economy.
Using incorrect oil will:
- ❌ Provide slower lubrication to cylinder walls during cold starts
- ❌ Decrease the efficiency of the Active Valve Control System (AVCS)
- ❌ Substantially reduce fuel economy
Subaru-Approved Oil Brands
-
✅ Genuine Subaru Certified 0W-20 Synthetic
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✅ Mobil 1 Advanced Fuel Economy 0W-20
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✅ Castrol Edge Extended Performance 0W-20
-
✅ Pennzoil Platinum 0W-20
-
✅ Valvoline Advanced Full Synthetic 0W-20
Subaru specifies that any API SP or ILSAC GF-6A rated 0W-20 synthetic oil is acceptable. The ILSAC starburst must be clearly visible on the container.
Severe Service Check
Subaru strongly recommends cutting the oil change interval in half to 3000 miles or 3 months if your driving habits include:
- Repeated short trips under 5 miles
- Frequent driving in dusty environments or on unpaved roads (like gravel or sand)
- Towing a trailer or hauling heavy gear (e.g., roof-mounted cargo)
- Driving in continuous stop-and-go traffic
- Driving in extremely cold environments
Installation Details
Drain Plug Torque: 31 ft-lbs
Warning: A specific crush washer is required for the Outback’s drain plug to prevent leaks. Always use a new washer and torque it precisely to 31 ft-lbs.
OEM Filter: Subaru 15208AA21A
Aftermarket Filters:
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Mobil 1 M1-104A
-
WIX 51334
-
K&N HP-1004
Pro Tip: Your Outback features a brilliantly designed top-mount oil filter ringed by a small catch cup. This makes changing the filter incredibly easy and mess-free. Just wipe out any oil that drips into the cup after removing the old filter.
FAQs
What oil does a 2022 Subaru Outback 2.5L take?
It requires 0W-20 full synthetic oil meeting API SP / ILSAC GF-6A standards.
How many quarts does it need?
4.4 quarts (approximately 4.2 liters) with an oil filter change. Always start with 4.2 quarts and check the dipstick before adding more.
Can I use 5W-30 instead?
If 0W-20 synthetic oil is unavailable, 5W-30 conventional oil may be used for a top-off. However, it must be drained and replaced with 0W-20 synthetic oil at the very next oil change.
How often should I change the oil?
Every 6000 miles or 6 months (whichever comes first) under normal driving conditions. Change it every 3000 miles or 3 months under severe driving conditions.
Need these specs on your phone? Download OilFinderPro app for offline access and oil change reminders.
Last verified: 2026-02-23 | Source: Needs OEM source confirmation (manual/spec page URL pending).