# Service bulletin No. 34\-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: 11022898 - Published by NHTSA: 2025\-09\-08 - Manufacturer's number: No. 34\-25 - Manufacturer's date: 2025\-08\-12 - NHTSA component: ENGINE ## NHTSA's summary Manufacturers certificate for an overview of approved Porsche C30 engine oils. Starting at model year 2021 vehicles. ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11022898-0001.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11022898-9999.pdf) The document is the manufacturer's. This site does not hold it. ## Components Engine ## Vehicles listed - 2021 to 2025 PORSCHE 718 BOXSTER - 2021 to 2024 PORSCHE 718 BOXSTER GTS - 2021 to 2024 PORSCHE 718 BOXSTER S - 2021 to 2024 PORSCHE 718 CAYMAN - 2026 PORSCHE 718 CAYMAN - 2022 to 2024 PORSCHE 718 CAYMAN GT4 - 2024 PORSCHE 718 CAYMAN GT4 RS - 2022 to 2024 PORSCHE 718 CAYMAN GTS - 2021 to 2023 PORSCHE 718 CAYMAN S - 2021 PORSCHE 718 SPYDER - 2022 to 2025 PORSCHE 718 SPYDER - 2024 PORSCHE 718 SPYDER RS - 2021 to 2026 PORSCHE 911 - 2022 PORSCHE 911 4S - 2021 to 2025 PORSCHE 911 CARRERA - 2023 PORSCHE 911 CARRERA 4 - 2022 to 2023 PORSCHE 911 CARRERA 4 GTS - 2023 PORSCHE 911 CARRERA 4S - 2022 to 2024 PORSCHE 911 CARRERA GTS - 2021 PORSCHE 911 CARRERA S - 2023 PORSCHE 911 CARRERA S - 2023 to 2024 PORSCHE 911 CARRERA T - 2023 to 2024 PORSCHE 911 DAKAR - 2021 to 2025 PORSCHE 911 GT3 - 2023 to 2024 PORSCHE 911 GT3 RS - 2022 to 2023 PORSCHE 911 GT3 TOURING - 2021 PORSCHE 911 TARGA 4 - 2023 PORSCHE 911 TARGA 4 - 2023 PORSCHE 911 TARGA 4S - 2023 PORSCHE 911 TARGA GTS - 2021 to 2023 PORSCHE 911 TURBO - 2021 to 2023 PORSCHE 911 TURBO S - 2023 PORSCHE CARRERA - 2023 PORSCHE CARRERA 4 - 2023 PORSCHE CARRERA 4 GTS - 2023 PORSCHE CARRERA 4S - 2023 PORSCHE CARRERA GTS - 2023 PORSCHE CARRERA S - 2021 to 2026 PORSCHE CAYENNE - 2024 to 2026 PORSCHE CAYENNE COUPE - 2021 to 2026 PORSCHE CAYENNE E\-HYBRID - 2024 to 2025 PORSCHE CAYENNE E\-HYBRID COUPE - 2021 to 2022 PORSCHE CAYENNE GT - 2021 to 2024 PORSCHE CAYENNE GTS - 2021 to 2024 PORSCHE CAYENNE S - 2024 PORSCHE CAYENNE S COUPE - 2023 PORSCHE CAYENNE TURBO - 2024 PORSCHE CAYENNE TURBO E\-HYBRID - 2022 to 2024 PORSCHE CAYENNE TURBO GT - 2021 to 2023 PORSCHE CAYENNE TURBO S E\-HYBRID - 2021 PORSCHE CAYMAN GT4 - 2021 PORSCHE CAYMAN GTS - 2023 PORSCHE EDITION 50 YEAR - 2021 to 2026 PORSCHE MACAN - 2024 PORSCHE MACAN 4 - 2024 to 2025 PORSCHE MACAN 4 ELECTRIC - 2025 PORSCHE MACAN 4S ELECTRIC - 2024 to 2025 PORSCHE MACAN ELECTRIC - 2021 to 2025 PORSCHE MACAN GTS - 2021 to 2025 PORSCHE MACAN S - 2024 PORSCHE MACAN T - 2021 to 2024 PORSCHE MACAN TURBO - 2024 to 2025 PORSCHE MACAN TURBO ELECTRIC - 2021 to 2024 PORSCHE PANAMERA - 2026 PORSCHE PANAMERA - 2021 to 2024 PORSCHE PANAMERA 4 - 2021 to 2026 PORSCHE PANAMERA 4 E\-HYBRID - 2021 to 2024 PORSCHE PANAMERA 4 EXECUTIVE - 2021 to 2024 PORSCHE PANAMERA 4S - 2021 to 2023 PORSCHE PANAMERA 4S E\-HYBRID - 2021 to 2024 PORSCHE PANAMERA 4S EXECUTIVE - 2021 to 2024 PORSCHE PANAMERA 4S SPORT TURISMO - 2022 to 2024 PORSCHE PANAMERA E\-HYBRID - 2021 PORSCHE PANAMERA GTS - 2023 to 2024 PORSCHE PANAMERA GTS - 2021 PORSCHE PANAMERA TURBO S - 2021 to 2023 PORSCHE PANAMERA TURBO S E\-HYBRID - 2021 PORSCHE PANAMERA TURBO S EXECUTIV - 2021 to 2026 PORSCHE TAYCAN - 2021 to 2024 PORSCHE TAYCAN 4 CROSS TURISMO - 2021 to 2024 PORSCHE TAYCAN 4S - 2021 to 2024 PORSCHE TAYCAN 4S CROSS TURISMO - 2021 to 2023 PORSCHE TAYCAN CROSS TURISMO - 2022 to 2024 PORSCHE TAYCAN GTS - 2022 to 2024 PORSCHE TAYCAN GTS SPORT TURISMO - 2021 to 2024 PORSCHE TAYCAN TURBO - 2026 PORSCHE TAYCAN TURBO - 2021 to 2024 PORSCHE TAYCAN TURBO CROSS TURISM - 2025 PORSCHE TAYCAN TURBO GT - 2021 to 2024 PORSCHE TAYCAN TURBO S - 2021 to 2024 PORSCHE TAYCAN TURBO S CROSS TURI - 2021 to 2022 PORSCHE redundant BOXSTER - 2021 to 2022 PORSCHE redundant CAYMAN - 2023 PORSCHE redundant CAYMAN GT4 - 2022 PORSCHE redundant CAYMAN GTS ## Recalls for the same vehicles and component - [21V486000](/recalls/nhtsa/21V486000.md), 2021-06-29: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE; ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION MOTOR:CONTROLLER:SOFTWARE - [21V341000](/recalls/nhtsa/21V341000.md), 2021-05-12: ENGINE ## Other bulletins for the same vehicles and component - [WSM5](/bulletins/11037867.md), 2026-10-02, Service campaign: ENGINE; STRUCTURE:BODY. Porsche intranet posting for Campaign WSM5 – Replacing engine data sticker \(VECI\) - [No. WSM5](/bulletins/11037865.md), 2026-10-02, Service campaign: ENGINE; STRUCTURE:BODY. Technical Information for Campaign WSM5 – Replacing engine data sticker \(VECI\) - [No. 87\-26](/bulletins/11037850.md), 2026-10-02, Service bulletin: POWER TRAIN; ENGINE. Technical Information for Rattling Noises from Around the Rear Silencer - [No. 91\-26](/bulletins/11037847.md), 2026-10-02, Service bulletin: POWER TRAIN; ENGINE. Technical Information for Particles/Metal Chips/Residues in Engine Oil - [SY No. 72\-26](/bulletins/11037832.md), 2026-10-02, Service bulletin: ENGINE; POWER TRAIN. 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](/bulletins/11037830.md), 2026-10-02, Service bulletin: ENGINE; POWER TRAIN. 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](/bulletins/11037826.md), 2026-10-02, Service bulletin: POWER TRAIN; ENGINE. Manufacturer's Certificate for Overview of approved Porsche C40 GT engine oils - [No. 31\-26](/bulletins/11037825.md), 2026-10-02, Service bulletin: POWER TRAIN; ENGINE. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils - [No. 30\-26](/bulletins/11037822.md), 2026-10-02, Service bulletin: ENGINE; POWER TRAIN. Manufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils - [No. 29\-26](/bulletins/11037818.md), 2026-10-02, Service bulletin: ENGINE; POWER TRAIN. Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils JSON: [/v1/bulletins/11022898](/v1/bulletins/11022898) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20No.%2034-25&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F11022898&vehicle=Service%20bulletin%20No.%2034-25)