# Service bulletin No. 20\-23 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: 10243589 - Published by NHTSA: 2023\-10\-05 - Manufacturer's number: No. 20\-23 - Manufacturer's date: 2023\-09\-05 - NHTSA component: ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION ## NHTSA's summary Manufacturers certificate for an overview of approved Porsche C20 engine oils. ## The document - [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10243589-0001.pdf) - [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10243589-9999.pdf) The document is the manufacturer's. This site does not hold it. ## Components Engine, Engine oil and lubrication ## Vehicles listed - 2021 to 2023 PORSCHE 718 BOXSTER - 2021 to 2023 PORSCHE 718 BOXSTER GTS - 2021 to 2023 PORSCHE 718 BOXSTER S - 2021 to 2023 PORSCHE 718 CAYMAN - 2022 to 2023 PORSCHE 718 CAYMAN GT4 - 2022 to 2023 PORSCHE 718 CAYMAN GTS - 2021 to 2023 PORSCHE 718 CAYMAN S - 2021 PORSCHE 718 SPYDER - 2022 to 2023 PORSCHE 718 SPYDER - 2021 to 2024 PORSCHE 911 - 2022 PORSCHE 911 4S - 2021 to 2024 PORSCHE 911 CARRERA - 2022 PORSCHE 911 CARRERA 4 GTS - 2022 PORSCHE 911 CARRERA GTS - 2024 PORSCHE 911 CARRERA GTS - 2021 PORSCHE 911 CARRERA S - 2023 PORSCHE 911 CARRERA S - 2023 PORSCHE 911 CARRERA T - 2023 PORSCHE 911 DAKAR - 2021 to 2024 PORSCHE 911 GT3 - 2023 to 2024 PORSCHE 911 GT3 RS - 2021 PORSCHE 911 TARGA 4 - 2023 PORSCHE 911 TARGA 4 - 2023 PORSCHE 911 TARGA 4S - 2021 to 2023 PORSCHE 911 TURBO - 2022 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 2024 PORSCHE CAYENNE - 2024 PORSCHE CAYENNE COUPE - 2021 to 2024 PORSCHE CAYENNE E\-HYBRID - 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 - 2021 to 2023 PORSCHE MACAN - 2021 to 2023 PORSCHE MACAN GTS - 2021 to 2023 PORSCHE MACAN S - 2021 to 2023 PORSCHE MACAN TURBO - 2021 to 2023 PORSCHE PANAMERA - 2021 to 2023 PORSCHE PANAMERA 4 - 2021 to 2024 PORSCHE PANAMERA 4 E\-HYBRID - 2021 to 2023 PORSCHE PANAMERA 4 EXECUTIVE - 2021 to 2024 PORSCHE PANAMERA 4S - 2021 to 2022 PORSCHE PANAMERA 4S E\-HYBRID - 2021 to 2024 PORSCHE PANAMERA 4S EXECUTIVE - 2021 to 2023 PORSCHE PANAMERA 4S SPORT TURISMO - 2022 PORSCHE PANAMERA E\-HYBRID - 2021 PORSCHE PANAMERA GTS - 2023 PORSCHE PANAMERA GTS - 2021 PORSCHE PANAMERA TURBO S - 2021 to 2022 PORSCHE PANAMERA TURBO S E\-HYBRID - 2021 PORSCHE PANAMERA TURBO S EXECUTIV - 2021 to 2024 PORSCHE TAYCAN - 2022 to 2023 PORSCHE TAYCAN 4 CROSS TURISMO - 2021 to 2023 PORSCHE TAYCAN 4S - 2021 to 2023 PORSCHE TAYCAN 4S CROSS TURISMO - 2021 to 2023 PORSCHE TAYCAN CROSS TURISMO - 2022 to 2023 PORSCHE TAYCAN GTS - 2023 PORSCHE TAYCAN GTS SPORT TURISMO - 2021 to 2023 PORSCHE TAYCAN TURBO - 2022 PORSCHE TAYCAN TURBO CROSS TURISM - 2021 to 2023 PORSCHE TAYCAN TURBO S - 2023 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 ## Other bulletins for the same vehicles and component - [No. 166\-21\-1](/bulletins/10249920.md), 2024-02-08, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT; ENGINE AND ENGINE COOLING. Technical information for Oil Leakage on Cylinder Head Cover: Insert Micro\-Self\-Locking Screw - [No. 166\-21\-2](/bulletins/10249919.md), 2024-02-08, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PIPES, HOSES, AND FITTINGS; ENGINE AND ENGINE COOLING; EQUIPMENT. Technical information for Oil Leakage on Cylinder Head Cover: Insert Micro\-Self\-Locking Screw - [No. 88\-20](/bulletins/10249917.md), 2024-02-08, Service bulletin: POWER TRAIN:AUTOMATIC TRANSMISSION:INTERNAL:CLUTCHES/BANDS; ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION: OIL COOLER. Technical information for a complaint \- oil leaks on double clutch transmission - [No. 147\-18](/bulletins/10249907.md), 2024-02-08, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT; ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PUMP. Technical information for the complaint \- rattling noise from around the crank drive - [No. 55\-22](/bulletins/10243592.md), 2023-10-05, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. Manufacturers certificate for an allocation of approved engine oils from MY24. - [No. 22\-23](/bulletins/10243591.md), 2023-10-05, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. Manufacturers certificate for an overview of approved Porsche C40 engine oils. - [No. 21\-23](/bulletins/10243590.md), 2023-10-05, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. Manufacturers certificate for an overview of approved Porsche C30 engine oils. - [No. D647](/bulletins/10242132.md), 2023-09-09, Service bulletin: UNKNOWN OR OTHER; ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION:PUMP. Parts information on parts withdrawal for the oil pump - [No. 12\-22](/bulletins/10222554.md), 2022-10-05, Service bulletin: ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. Instructions on manufacturers certificate for allocation of approved engine oils. JSON: [/v1/bulletins/10243589](/v1/bulletins/10243589) [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.%2020-23&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10243589&vehicle=Service%20bulletin%20No.%2020-23)