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
- Engine - Motor Oils That Minimize Carbon Build-Up
- Tools - Special Wheel Balancing Adapter
- Spark Plug - Replacement Intervals
- Towing - Long Distance & Emergency
- Tools - Auto Scopemeter & Engine Analyzer
- A/C - Capacities Update
- A/C - Refrigerant Charge Level Increased
- A/C - Substitutes for R-12 Refrigerant
- A/C Refrigerant - Identifier
- A/C - Refrigerant 134a Use
- Distributor Drive Gear - Installing Onto Crankshaft
- Oil Filters - Unnecessary Perforation of When Removing
- Tools - Calibration Gauge for Special Tool 9201
- Ignition System - Radio Interference
- Spark Plug & Connector - Removal
- Spark Plugs - Install With Threads Clean and Dry
- Spark Plugs - Revised Plugs and Tightening Torque
- 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 - Approved 17 Inch Wheels
- 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
- Spare Wheel - Wheel Modified For Lockable Lug Nut
- 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
- Distributor - Modified Drive Gear on Crankshaft
- Crankshaft Pulley - Correct Timing Mark Information
- Engine - Tune Up Specifications
- Engine Performance - Stalling and Surging At Idle
- Emissions - Basic Equipment & 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
- Alignment - Caster Adjustment Values
- Front Wheel Seals - Squeaking or Whistling Noise
- Tools - Wheel Alignment Equipment
- 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