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Service bulletin No. 14-23

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10240439
Published by NHTSA2023-08-04
Manufacturer's numberNo. 14-23
Manufacturer's date2023-07-31
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

Manufacturers certificate for allocation of approved engine oils

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, 2021, 2022, 2023
PORSCHE 718 BOXSTER GTS2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 718 BOXSTER S2017, 2018, 2019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 718 CAYMAN2016
PORSCHE 718 CAYMAN2017, 2018, 2019, 2020, 2021, 2022, 2023
PORSCHE 718 CAYMAN GT42022, 2023 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 718 CAYMAN GTS2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 718 CAYMAN S2017, 2018, 2019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 718 SPYDER2018 to 2019
PORSCHE 718 SPYDER2020
PORSCHE 718 SPYDER2021
PORSCHE 718 SPYDER2022, 2023
PORSCHE 9111966 to 1967
PORSCHE 9111969 to 1970
PORSCHE 9111972 to 1979
PORSCHE 9111983, 1984
PORSCHE 9111987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
PORSCHE 9112012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
PORSCHE 911 (997)2005, 2006, 2007, 2008, 2009, 2010, 2011 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 4S2022 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 CARRERA1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 CARRERA2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 CARRERA 42009 (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 CABRIOLET1995, 1996, 1997, 1998 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 CARRERA 4 CABRIOLET2003 (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 4S2003 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 CARRERA 4S2009 (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 CABRIOLET1995, 1996, 1997, 1998 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 CARRERA CABRIOLET2003 (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 S2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 CARRERA S2023 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 CARRERA S CABRIOLET2005, 2006 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 CARRERA T2023 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 DAKAR2023 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 GT22003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 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 RS2010, 2011 (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 GT32003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 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 GT32021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 GT3 RS2008 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 GT3 RS2010, 2011 (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 GT3 RS2023, 2024 (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 SPEEDSTER2011 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 TARGA2003 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 TARGA 42009 (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, 2021 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 TARGA 42023 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 TARGA 4S2009 (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 TARGA 4S2023 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 TURBO1997 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 TURBO2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 TURBO S2005 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 TURBO S2010, 2011, 2012 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911 TURBO S2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911E1972
PORSCHE 911S1974
PORSCHE 911SC1974 to 1975
PORSCHE 911SC2000 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 911T1972
PORSCHE 9121969
PORSCHE 912E1976
PORSCHE 914
PORSCHE 9141970 to 1976
PORSCHE 9182015
PORSCHE 918 SPYDER2015 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 918 SPYDER2016
PORSCHE 924
PORSCHE 9241977
PORSCHE 9241979 to 1980
PORSCHE 9241982
PORSCHE 9241987, 1988
PORSCHE 928
PORSCHE 9281978 to 1980
PORSCHE 9281981, 1982
PORSCHE 9281984
PORSCHE 9281985 to 1988
PORSCHE 9281989, 1990, 1991, 1992, 1993, 1994
PORSCHE 9281995
PORSCHE 9301978
PORSCHE 9441983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991
PORSCHE 9441992 to 1993
PORSCHE 944 TURBO1986, 1987, 1988 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 944S1987, 1988 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE 9681991
PORSCHE 9681992, 1993, 1994
PORSCHE 9681995
PORSCHE 9681997
PORSCHE 9682001
PORSCHE 987 CAYMAN2009
PORSCHE 996 TURBO2002
PORSCHE 997 (911)2008
PORSCHE BOXSTER1996
PORSCHE BOXSTER1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
PORSCHE BOXSTER2012, 2013, 2014, 2015
PORSCHE BOXSTER (987)2005, 2006, 2007, 2008, 2009, 2010, 2011 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE BOXSTER S2000, 2001, 2002, 2003, 2004, 2005 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE BOXSTER S2011, 2012, 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 CABRIO1990
PORSCHE CABRIOLET1999
PORSCHE CARRERA
PORSCHE CARRERA1974
PORSCHE CARRERA1987 to 1993
PORSCHE CARRERA1995 to 1999
PORSCHE CARRERA2001
PORSCHE CARRERA2023
PORSCHE CARRERA 21990
PORSCHE CARRERA 41989 to 1990
PORSCHE CARRERA 42023
PORSCHE CARRERA 4 GTS2023
PORSCHE CARRERA 4S2023
PORSCHE CARRERA GT2004 to 2005
PORSCHE CARRERA GTS2023
PORSCHE CARRERA S2023
PORSCHE CARRERRA GT2006
PORSCHE CAYENNE2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
PORSCHE CAYENNE (E2)2011 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE COUPE2024 (the catalog's model; the bulletin names a series or trim of it)
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, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE GT2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE GTS2006, 2007, 2008, 2009, 2010 (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 GTS2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE S2003, 2004, 2005, 2006, 2007, 2008, 2009 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE S2011, 2012, 2013, 2014, 2015 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE S2018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE S COUPE2024 (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 HYBRID2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE TRANSSYBERIA2010 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE TURBO2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 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 TURBO2023 (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 GT2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYENNE TURBO S2006, 2007, 2008, 2009, 2010 (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, 2021, 2022, 2023 (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 CAYMAN2005
PORSCHE CAYMAN2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
PORSCHE CAYMAN2020
PORSCHE CAYMAN GT42016 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYMAN GT42020 to 2021
PORSCHE CAYMAN GTS2020 to 2021
PORSCHE CAYMAN R2012 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE CAYMAN S2005
PORSCHE CAYMAN S2006 (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 COUPE1990
PORSCHE GT22002
PORSCHE MACAN2014
PORSCHE MACAN2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
PORSCHE MACAN GTS2017, 2018, 2019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE MACAN S2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 (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, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
PORSCHE PANAMERA 42011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA 4 E-HYBRID2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA 4 EXECUTIVE2018, 2019, 2020, 2021, 2022, 2023 (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 4S2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA 4S E-HYBRID2019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA 4S EXECUTIVE2017, 2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA 4S SPORT TURISMO2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA E-HYBRID2022 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA GTS2010, 2011, 2012, 2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA GTS2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA GTS2023 (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 S2010, 2011, 2012, 2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA S E-HYBRID2011, 2012, 2013, 2014, 2015, 2016 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA S HYBRID2011, 2012, 2013, 2014 (the catalog's model; the bulletin names a series or trim of it)
PORSCHE PANAMERA TURBO2010, 2011, 2012, 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)

And 28 more lines, in the JSON.

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

Recalls for the same vehicles and component
21V3410002021-05-12. ENGINE
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
06V0080002006-01-12. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
95V2480001995-12-28. ENGINE AND ENGINE COOLING:COOLING SYSTEM

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
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No. 37-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of approved Porsche C40 GT engine oils
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No. 31-262026-10-02. Service bulletin. Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils
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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.
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