Service bulletin No. 51-25
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 11027272 |
| Published by NHTSA | 2026-01-07 |
| Manufacturer's number | No. 51-25 |
| Manufacturer's date | 2025-12-17 |
| NHTSA component | ENGINE |
NHTSA's summary
Manufacturers certificate for an Overview of Approved Porsche C40 GT Engine Oils. 982, 991, and 992 affected
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Engine
| PORSCHE 718 CAYMAN GT4 | 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
|---|---|
| PORSCHE 718 CAYMAN GT4 RS | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 718 SPYDER RS | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 | 2021, 2022 |
| PORSCHE 911 | 2025, 2026 |
| PORSCHE 911 CARRERA | 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 CARRERA S | 2021 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 CARRERA S | 2023 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 CARRERA T | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 GT3 | 2021, 2022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE 911 GT3 RS | 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE CAYMAN GT4 | 2016 (the catalog's model; the bulletin names a series or trim of it) |
| PORSCHE CAYMAN GT4 | 2021 |
| PORSCHE redundant CAYMAN GT4 | 2023 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| WSM5 | 2026-10-02. Service campaign. Porsche intranet posting for Campaign WSM5 – Replacing engine data sticker (VECI) |
|---|---|
| No. WSM5 | 2026-10-02. Service campaign. Technical Information for Campaign WSM5 – Replacing engine data sticker (VECI) |
| No. 87-26 | 2026-10-02. Service bulletin. Technical Information for Rattling Noises from Around the Rear Silencer |
| No. 91-26 | 2026-10-02. Service bulletin. Technical Information for Particles/Metal Chips/Residues in Engine Oil |
| SY No. 72-26 | 2026-10-02. Service bulletin. Symptom-based workshop manual for High-Pitched “Whining” and Whistling Noises in Partial Load Operation from the Engine Area. Note that this bulletin only covers 911 Turbo S with the t-hybrid system. |
| No. 72-26 | 2026-10-02. Service bulletin. Symptom-based workshop manual for High-Pitched “Whining” and Whistling Noises in Partial Load Operation from the Engine Area. Note that this bulletin covers only 911 GTS t-hybrid models. |
| No. 32-26 | 2026-10-02. Service bulletin. Manufacturer's Certificate for Overview of approved Porsche C40 GT engine oils |
| No. 31-26 | 2026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils |
| No. 30-26 | 2026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils |
| No. 29-26 | 2026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils |