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September 22, 2026 Service bulletin

Manufacturer's Certificate for Overview of Approved Porsche A40 Engine Oils

Porsche technical service bulletin No. 25-26 for 2003-2020 Porsche Cayenne, 2014-2020 Porsche Macan and 2002-2006, 2012-2015 Porsche Boxster and others.

Bulletin number
No. 25-26
Component
Engine
Summary
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.

Owners of these vehicles have filed 450 complaints in the engine category.

Vehicles covered

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