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.
Last verified: 2026-03-31 | Source: 2023 Subaru BRZ Owner’s Manual