Engine: Technical Service Bulletins
- Engine - Approved Engine Oil Specification
- Engine - Approved Porsche A40 Engine Oils
- VIN Plate, Certification & Emission Label - Availability
- Engine Crankcase - Standard Replacement Parts
- Valve Guide - Checking Procedure
- Tools - Auto Scopemeter & Engine Analyzer
- Camshaft Housing and Manifold - Revised Sealing
- Oil Cooler Fan - Updated Ballast Resistor
- Engine - Approved Engine Oils
- Engine - Porsche Approved Oils
- Oil Drain Plug - Revised Torque Specification
- Engine - Cleaning of Oil Circuits
- Cylinder Head Studs - Installation Precautions
- Engine - Approved Engine Oils Overview