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September 22, 2026 Service bulletin

Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils

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

Bulletin number
No. 26-26
Component
Engine
Summary
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.

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

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