Engine: Technical Service Bulletins
- Customer Interest
- By Symptom
- All Technical Service Bulletins
- Engine - Approved Engine Oil Specification
- Engine - Approved Porsche A40 Engine Oils
- VIN, Certification, & Emission Label - Availability
- VIN, Certification & Emission Labels - Availability
- VIN Plate, Certification & Emission Label - Availability
- Warranty - Engine Follow Up Service After Major Repairs
- Valve Guide - Checking Procedure
- Connecting Rod Nut - Revised Torque Procedure
- Crankcase - Oil Leaks from Cast-on Oil Pipe
- Oil Return Tube Sealing Ring - Modified
- Tools - Auto Scopemeter & Engine Analyzer
- Valve Seat - Checking Depth
- Spark Plug - Replacement Intervals
- Spark Plugs - Install With Threads Clean and Dry
- Oil Cooler Fan - Updated Ballast Resistor
- Engine Lubrication - Oils That Minimize Carbon Build-Up
- Engine - Motor Oils That Minimize Carbon Build-Up
- Engine - Approved Engine Oils
- Engine - Porsche Approved Oils
- Engine - Cleaning of Oil Circuits
- Cylinder Head Studs - Installation Precautions
- Engine - Approved Engine Oils Overview