Complete Oil Specifications
Your 2023 Porsche 911 Carrera 3.0L Twin-Turbo Flat-6 requires 0W-40 full synthetic oil meeting the Porsche C40 (Low-SAPS) specification. C40 replaced the older A40 spec for the 992 generation to protect the Gasoline Particulate Filter (GPF) — only C40-certified oils carry the required low sulfated-ash content.
Quick Reference
| Specification | Value |
|---|---|
| Viscosity | 0W-40 |
| API Rating | Porsche C40 (Low-SAPS) |
| ILSAC Rating | Porsche C40 |
| Capacity (with filter) | 8.5 quarts |
| Oil Filter | Porsche 99610722578 |
| Normal Interval | 10000 miles |
Why 0W-40 C40 is Critical for This Engine
The MA3.01 twin-turbo flat-six runs extreme combustion pressures and temperatures, and the 992 generation added a Gasoline Particulate Filter to meet Euro 6d emissions standards. High-SAPS oils (like the old A40 standard) deposit ash onto GPF substrates, accelerating clogging and triggering expensive regeneration cycles. Porsche C40 mandates low SAPS to extend GPF service life while still providing the film strength a turbocharged flat-six demands.
Using incorrect oil will:
- ❌ Contaminate and prematurely clog the Gasoline Particulate Filter
- ❌ Risk turbocharger bearing damage from inadequate film strength at operating temperature
- ❌ Void Porsche warranty coverage related to the emissions system
Porsche-Approved Oil Brands
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✅ Mobil 1 ESP Formula 0W-40
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✅ Castrol EDGE Professional OE 0W-40
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✅ Liqui-Moly Special Tec F 0W-40
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✅ Shell Helix Ultra ECT C3 0W-40
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✅ Pennzoil Platinum Euro Full Synthetic 0W-40
Confirm the Porsche C40 approval is printed on the container label. Oils carrying only ACEA A3/B4 or the older Porsche A40 designation do not meet the C40 GPF-protection requirement.
Severe Service Check
You need the 5000-mile interval if you:
- Use the 911 on track days or in Sport/Sport Plus driving modes frequently
- Drive in sustained stop-and-go traffic in hot climates
- Operate consistently at high RPM (above 6,000 rpm)
- Experience ambient temperatures above 100°F regularly
Installation Details
Drain Plug Torque: 22 ft-lbs
The 911’s mid-engine layout places the dry-sump oil tank in the right rear corner — drain from the tank drain, not just the engine sump. Consult your service documentation for the full two-drain procedure.
OEM Filter: Porsche 99610722578
Aftermarket Filters:
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Mahle OC 1024
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Mann-Filter HU 726/2 x
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Bosch 3397
Pro Tip: The 992 uses a dry-sump lubrication system with a separate oil tank. Always check the oil level via the digital display after a warm-up cycle, not immediately after filling, to get an accurate reading.
FAQs
What oil does a 2023 Porsche 911 Carrera take? 0W-40 full synthetic oil certified to the Porsche C40 (Low-SAPS) specification.
How many quarts does it need? 8.5 quarts with a new filter, 7.9 without.
Can I use an oil labelled Porsche A40 instead of C40? No. A40 is a High-SAPS standard that predates the GPF. Using it risks permanent damage to the particulate filter and emissions-related warranty claims.
Is full synthetic required? Yes — Porsche C40 is a full-synthetic-only specification.
How often should I change the oil? Every 10000 miles for normal driving; every 5000 miles with track use or sustained high-performance driving.
Does the dry-sump system change how I check the level? Yes. Run the engine to operating temperature, shut off, wait two minutes, then check via the PCM instrument display. Checking cold or immediately after shutdown gives an inaccurate reading.
Need these specs on your phone? Download OilFinderPro app for offline access and oil change reminders.
Last verified: 2026-06-06 | Source: 2023 Porsche 911 Owner’s Manual (WKD 911 721)