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Service bulletin No. 12-26

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11033638
Published by NHTSA2026-06-05
Manufacturer's numberNo. 12-26
Manufacturer's date2026-05-22
NHTSA componentENGINE

NHTSA's summary

Manufacturers certificate for an Allocation of Approved Engine Oils MY 2026

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

Vehicles listed
PORSCHE 718 BOXSTER2026
PORSCHE 718 CAYMAN2026
PORSCHE 718 SPYDER2026
PORSCHE 9112026
PORSCHE 911 CARRERA2026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 GT32026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE2026
PORSCHE CAYENNE COUPE2026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE E-HYBRID2026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE E-HYBRID COUPE2026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE GTS2026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE GTS COUPE2026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE S COUPE2026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE TURBO E-HYBRID2026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE TURBO E-HYBRID COUPE2026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE MACAN2026
PORSCHE MACAN GTS2026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE MACAN S2026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA2026
PORSCHE PANAMERA 42026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA 4 E-HYBRID2026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA 4S E-HYBRID2026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA GTS2026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA TURBO E-HYBRID2026 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA TURBO S E-HYBRID2026 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
No. 91-262026-10-02. Service bulletin. Technical Information for Particles/Metal Chips/Residues in Engine Oil
SY No. 72-262026-10-02. 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. 72-262026-10-02. 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. 32-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of approved Porsche C40 GT engine oils
No. 31-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils
No. 30-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils
No. 29-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils
No. 36-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils
No. 62-262026-10-02. Service bulletin. Technical Information for Coolant Warning Light Lights Up: Suspected Coolant Loss on the Coolant Pump
GR13D8022026-09-04. Service bulletin. Parts Information for Parts Withdrawal - Coolant Regulator Housing