Maintenance: Technical Service Bulletins
- Customer Interest
- By Symptom
- All Technical Service Bulletins
- Engine - Approved Engine Oils Overview
- Brake Fluid - DOT 4 Now Used In Production
- Transmission Fluids - Specifications
- A/T - Approved ATF
- Engine - Motor Oils That Minimize Carbon Build-Up
- Tools - Special Wheel Balancing Adapter
- Towing - Long Distance & Emergency
- Fuse - Location for Rear Lid Lock Motor
- Tools - Auto Scopemeter & Engine Analyzer
- A/C - Substitutes for R-12 Refrigerant
- A/C Refrigerant - Identifier
- A/C - Refrigerant 134a Use
- Power Steering - Hydraulic Noise During Full Turns
- Steering Stop and Dust Cover - Modified
- Toothed Engine Belts - Storage, Packing and Handling
- Tools - Calibration Gauge for Special Tool 9201
- Cooling System - Clean & Flush After Repairing Leak
- Tensioning Roller Carrier, Water Pump - Modification
- Radiator - Plugged Up
- Cooling System - Approved Phosphate Free Anti-Freeze
- Spark Plugs - Install With Threads Clean and Dry
- Spark Plugs - Revised Plugs and Tightening Torque
- Camshaft Drive Belt - Adjustments
- Wheels - Unapproved Installation of 18 Inch Wheels
- Tires/Wheels - Summer Recommendations
- Tires/Wheels - Summer Tire and Wheel Rim Summary
- Wheels - Non Approval of Chrome Plating Aluminum Wheels
- Wheels - Aftermarket Wheel Rims With Pressure Switches
- Wheels - Retrofitting Unapproved 18 Inch Wheels
- Tire/Wheel Rim - Latest Winter Recommendations
- Overview
- Tire Pressures
- Collapsible Spare Tire Information
- Recommended Winter Tires For Porsche 4 CYL. ENG. Cars
- Winter Wheel Rim and Tire Sizes For Porsche 4 CYL. ENG. Cars
- Survey of 4 CYL. Porsche Wheel Rims For Winter Tires
- Recommended Winter Tires For Porsche 6 CYL. ENG. Cars
- Winter Tire/Wheel Rim Summary and Tire Sizes For 6 CYL. ENG. Cars
- Survey of 6 CYL. ENG. Porsche Wheel Rims For Winter Tires
- Recommended Winter Tires For Porsche 8 Cylinder Engine Cars
- Winter Wheel Rim and Tire Sizes For Porsche 8 Cylinder Engine Cars
- Survey of Porsche Wheel Rims For Winter Tires - 928/S/S4/GT
- Wheel/Tire - General Information
- Tires/Wheels - Winter Tire/Wheel Rim Summary
- Tires - Manufacturer Contact Information
- Tires (VR-Rated Summer ) - Do Not Mix With ZR Rated
- TDC Sensor - Do Not Use to Set Timing
- Engine - Tune Up Specifications
- Emissions - Basic Equipment and Tune-Up Specifications.
- Engine Lubrication - Oils That Minimize Carbon Build-Up
- Engine - Approved Engine Oils
- Engine - Porsche Approved Oils
- Tools - Wheel Alignment Equipment
- Wheels/Tires - Approved Summer Wheels/Tires
- Tires/Wheels - Winter Tires/Wheels/Snow Chains
- A/C - Use of Correct Refrigerant
- A/C - Refrigerent Oil Volume Capacities
- Tires - Summer Tire Summary
- Engine - Approved Porsche A40 Engine Oils
- Tires/Wheels - Handling Instructions After Damaged