Complete Oil Specifications
Your 2023 Subaru BRZ 2.4L requires 0W-20 full synthetic oil meeting API SP and ILSAC GF-6A standards. The FA24D is a high-revving naturally aspirated boxer four-cylinder — Subaru’s most performance-focused production engine, shared with the Toyota GR86.
Quick Reference
| Specification | Value |
|---|---|
| Viscosity | 0W-20 |
| API Rating | SP |
| ILSAC Rating | GF-6A |
| Capacity (with filter) | 5.0 quarts |
| Oil Filter | Subaru 15208AA170 |
| Normal Interval | 7500 miles |
Why 0W-20 is Critical for This Engine
The FA24D is engineered for high-RPM performance — its 8,400 RPM redline means oil circulates through the engine at nearly three times the rate of a typical crossover. At high RPM, oil must reach the upper valve train and boxer engine’s horizontally-mounted cylinder heads quickly to prevent dry running. 0W-20’s low cold-start viscosity ensures near-instant oil pressure at startup, while its full-synthetic formulation maintains film strength through sustained high-RPM driving. The boxer layout also creates unique oil surge challenges during hard cornering — ILSAC GF-6A certified oils include anti-foaming agents that prevent aeration when oil is displaced laterally.
Using incorrect oil will:
- ❌ Risk oil starvation in the upper valve train at high RPM from slow cold-start circulation
- ❌ Allow oil foaming during lateral acceleration, reducing bearing film thickness in corners
- ❌ Accelerate piston ring wear from inadequate anti-wear chemistry in non-GF-6A oil
Subaru-Approved Oil Brands
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✅ Subaru Genuine Motor Oil Full Synthetic 0W-20
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✅ Mobil 1 Advanced Full Synthetic 0W-20
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✅ Pennzoil Platinum Full Synthetic 0W-20
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✅ Castrol Edge 0W-20 Advanced Full Synthetic
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✅ Valvoline Advanced Full Synthetic 0W-20
For sustained track use where oil temperatures exceed 220°F, 5W-30 full synthetic is an acceptable alternative — the slightly higher cold viscosity provides better film thickness at extreme temperatures without meaningfully impacting cold-start protection in most track environments.
Severe Service Check
You need the 3750-mile interval if you:
- Drive on track or attend autocross/HPDE events
- Regularly rev beyond 6,000 RPM in canyon or mountain driving
- Drive in extreme heat above 100°F ambient temperature
- Make frequent short trips under 5 miles in cold weather
Installation Details
Drain Plug Torque: 31 ft-lbs ⚠️ The FA24D uses a steel drain plug in an aluminum oil pan. At 31 ft-lbs, do not exceed the spec — the aluminum pan threads are vulnerable to stripping, especially after multiple changes.
OEM Filter: Subaru 15208AA170
Aftermarket Filters:
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K&N HP-1008
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Fram PH7317
-
Wix 51348
Pro Tip: The BRZ’s boxer engine sits low and wide — the oil filter is on the driver’s side, facing the firewall. Reach behind the engine block from above or below the car with a short 64mm cap wrench. Pre-fill the new filter before installation to minimize dry running on the first startup.
FAQs
What oil does a 2023 Subaru BRZ take? 0W-20 full synthetic oil meeting API SP and ILSAC GF-6A standards.
How many quarts does it need? 5.0 quarts with a new filter, 4.8 quarts without.
Can I use 5W-30 in my BRZ? Yes — 5W-30 full synthetic is acceptable for track and performance driving where oil temperatures run high. 0W-20 is the OEM recommendation for street use.
Is synthetic oil required? Yes — full synthetic is required for the high-revving FA24D to maintain adequate film thickness at sustained high RPM.
How often should I change the oil? Every 7500 miles for normal driving, every 3750 miles for track or spirited performance driving.
Need these specs on your phone? Download OilFinderPro app for offline access and oil change reminders.
Last verified: 2026-03-31 | Source: 2023 Subaru BRZ Owner’s Manual