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Service bulletin No. 05-26

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 id11030887
Published by NHTSA2026-04-07
Manufacturer's numberNo. 05-26
Manufacturer's date2026-03-27
NHTSA componentENGINE

NHTSA's summary

Manufacturers certificate for an overview of approved engine oils (C40). The vehicles involved are ones that use the engine oil mentioned. MY2012-2020

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 7182017
PORSCHE 718 BOXSTER2016
PORSCHE 718 BOXSTER2017, 2018, 2019, 2020
PORSCHE 718 BOXSTER S2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 718 CAYMAN2016
PORSCHE 718 CAYMAN2017, 2018, 2019, 2020
PORSCHE 718 CAYMAN S2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 718 SPYDER2018 to 2019
PORSCHE 718 SPYDER2020
PORSCHE 9112012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
PORSCHE 911 CARRERA2012, 2013, 2014, 2015, 2016, 2017 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 CARRERA2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 CARRERA 42012, 2013 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 CARRERA 4 GTS2012 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 CARRERA 4S2012 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 CARRERA GTS2012 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 CARRERA S2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 GT22012, 2013 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 GT22019 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 GT2 RS2018, 2019 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 GT32012, 2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 GT32018, 2019 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 GT3 RS2016 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 GT3 RS2019 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 R2016 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 TARGA 42012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 TARGA 4S2012 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 TARGA 4S2014 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 TURBO2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 TURBO S2012 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 9182015
PORSCHE 918 SPYDER2015 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 918 SPYDER2016
PORSCHE BOXSTER2012, 2013, 2014, 2015
PORSCHE BOXSTER S2012, 2013, 2014 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE BOXSTER SPYDER2012 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
PORSCHE CAYENNE DIESEL2013, 2014, 2015 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE E-HYBRID2014 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE E-HYBRID2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE GT2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE GTS2013, 2014 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE GTS2016 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE S2012, 2013, 2014, 2015 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE S2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE S E-HYBRID2015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE S E-HYBRID2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE S HYBRID2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE TURBO2012, 2013, 2014, 2015 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE TURBO2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE TURBO COUPE2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE TURBO S2014 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE TURBO S2016 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE TURBO S E-HYBRID2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE TURBO S HYB COUPE2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYMAN2012, 2013, 2014, 2015
PORSCHE CAYMAN2020
PORSCHE CAYMAN GT42016 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYMAN GT42020
PORSCHE CAYMAN GTS2020
PORSCHE CAYMAN R2012 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYMAN S2012 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYMAN S2014 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE MACAN2014
PORSCHE MACAN2015, 2016, 2017, 2018, 2019, 2020
PORSCHE MACAN GTS2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE MACAN S2015, 2016, 2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE MACAN SPORT EDITION2018 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE MACAN TURBO2015, 2016, 2017, 2018 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE MACAN TURBO2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
PORSCHE PANAMERA 42012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA 4 E-HYBRID2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA 4 EXECUTIVE2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA 4 HYBRID2018 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA 4 HYBRID EXECUTI2018 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA 4 HYBRID SPORT T2018 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA 4 SPORT TURISMO2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA 4S2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA 4S E-HYBRID2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA 4S EXECUTIVE2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA 4S SPORT TURISMO2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA GTS2012, 2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA GTS2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA GTS SPORT TURISM2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA S2012, 2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA S E-HYBRID2012, 2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA S HYBRID2012, 2013, 2014 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA TURBO2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA TURBO EXECUTIVE2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA TURBO S2012, 2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA TURBO S E-HYBRID2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA TURBO S HYBRID2018 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA TURBO S HYBRID E2018 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA TURBO S HYBRID S2018 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA TURBO SPORT TURI2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE TAYCAN2020
PORSCHE TAYCAN 4S2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE TAYCAN CROSS TURISMO2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE TAYCAN TURBO2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE TAYCAN TURBO S2020 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE redundant BOXSTER2017
PORSCHE redundant BOXSTER2020

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

Recalls for the same vehicles and component
20172962017-06-07. Engine
17V3680002017-06-07. ENGINE
15V0160002015-01-20. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
14V0900002014-03-24. ENGINE AND ENGINE COOLING
13V0580002013-02-22. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
12V3290002012-07-12. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
20122092012-07-11. Engine

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

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
No. 37-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of approved Porsche C40 GT engine oils
No. 28-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils. Note that this bulletin covers all models back to model year 1984, for which C40 engine oils are allocated.
No. 27-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils. Note that the bulletin covers all models back to model year 1984, for which C20 engine oils are allocated.
No. 26-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils. Note that the bulletin includes all models back to model year 1984, for which C30 engine oils are allocated.
No. 25-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche A40 Engine Oils. Note that this bulletin covers all vehicles from model year 1997 to 2020, for which A40 engine oils are assigned. Model years 1997-2001 are not available for selection in the system.
GR13D8022026-09-04. Service bulletin. Parts Information for Parts Withdrawal - Coolant Regulator Housing
No. 2304-22026-09-04. Service bulletin. Information on Advanced Technical Information for E3.I/G2 V8 – Oil/Air Separator Membrane Failure
No. 50-26-22026-09-04. Warranty extension. Update to Warranty Information: Warranty Extension for Additional Coolant Pump
13/262026-08-06. Service bulletin. Allocation of Approved Engine Oils MY 2027 (13/26)