Complete Oil Specifications
Your 2024 Subaru Impreza 2.5L requires 0W-20 full synthetic motor oil to provide optimal protection for its BOXER engine.
Quick Reference
| Specification | Value |
|---|---|
| Viscosity | 0W-20 |
| API Rating | SP |
| ILSAC Rating | GF-6A |
| Capacity (with filter) | 4.4 quarts |
| Oil Filter | Subaru 15208AA170 |
| Normal Interval | 6000 miles |
Why 0W-20 is Critical for This Engine
The 2.5L FB25 engine in the 2024 Impreza uses a unique horizontally-opposed “Boxer” layout. Low-viscosity 0W-20 oil is critical for ensuring that oil reaches the upper cylinder banks quickly after starting, preventing dry-start wear on the valves and pistons, while also helping achieve Subaru’s fuel efficiency targets.
Using incorrect oil will:
- ❌ Increase wear on the valve train and cam phasers
- ❌ Potentially slow the response of the Active Valve Control System (AVCS)
- ❌ Increase cylinder head temperatures under load
Subaru-Approved Oil Brands
-
✅ Subaru Genuine 0W-20 Motor Oil
-
✅ Idemitsu Zepro Eco Medalist 0W-20
-
✅ Mobil 1 Advanced Fuel Economy 0W-20
-
✅ Castrol Edge 0W-20
-
✅ Valvoline Advanced Full Synthetic 0W-20
Subaru engines are sensitive to oil quality. Ensure only full synthetic oils meeting API SP and ILSAC GF-6A standards are used to maintain your warranty.
Severe Service Check
Follow the 3000-mile interval if you:
- Drive in dusty, sandy, or salted road environments
- Experience extreme temperature conditions (hot or cold)
- Frequently tow or haul heavy loads
- Drive on steep or mountainous roads
- Make repeated short trips where the engine does not reach full operating temperature
Installation Details
Drain Plug Torque: 31 ft-lbs
Always use a new Subaru drain plug crush gasket. Failure to do so can lead to slow leaks or over-tightening.
OEM Filter: Subaru 15208AA170 (Top-mounted for easy access)
Aftermarket Filters:
-
Mobil 1 M1-110A
-
Wix 57055
-
Fram XG4386
Pro Tip: One of the best features of this engine is the top-mounted oil filter. Place a rag around the filter housing before unscrewing to catch any drips, and ensure the old O-ring is removed before installing the new filter.
FAQs
What oil does a 2024 Subaru Impreza 2.5L take?
0W-20 full synthetic motor oil meeting API SP standards.
How many quarts does it need?
4.4 quarts with a filter change.
Can I use 0W-16?
The 2.5L engine specifies 0W-20. While some other Subaru 2.0L models may use 0W-16, the 2.5L RS/Sport trim should stick to 0W-20 for optimal protection.
Is synthetic oil required?
Yes. Full synthetic is required to maintain the protection standards over the 6,000-mile interval.
How often should I change the oil?
Every 6,000 miles or 6 months. For severe service, reduce this to 3,000 miles or 3 months.
Need these specs on your phone? Download OilFinderPro app for offline access and oil change reminders.
Last verified: 2026-03-07 | Source: 2024 Subaru Impreza Owner’s Manual