Miscellaneous Periodic Maintenance Schedule – 2.5L NA Estimated reading: 4 minutes Contributors Overview The Periodic Maintenance Schedule for the Porsche 944 3.0L S2 (1989–1991) ensures optimal performance and longevity of this high-performance vehicle. Regular maintenance is critical to preserve the engine, cooling, braking, and suspension systems, particularly the late-model alloy control arms unique to this variant. This schedule is adapted from Clark’s Garage recommendations, tailored specifically for the 3.0L S2, with shorter oil change intervals for engine longevity and checks suited for its advanced systems. Maintenance Schedule After Timing Belt Replacement (500 – 2000 miles / 800 – 3200 km) Task Description Timing and Balance Shaft Belts Check tension and condition. Every 5000 miles / 8000 km Note: While Porsche recommends a 15000-mile oil change interval for normally aspirated engines like the 3.0L S2, shorter intervals (every 5000 miles) are recommended for engine longevity. Use only Mahle or Porsche OEM oil filters with check valves. Task Description Engine Oil and Filter Change oil and filter. Every 15000 miles / 24000 km Task Description Engine Visual inspection for leaks. Cooling and Heating System Check for leaks. Coolant Hoses Check condition and tighten connections. Radiator Visual inspection for external fouling. Coolant (Antifreeze) Check level and antifreeze content. Crankcase Ventilation Check tightness of hose connections. Intake Air Check hoses, lines, and connections for tightness. Brake Pedal Check play and adjust if necessary. Brake Hoses and Lines Visual inspection for leaks, damage, and corrosion. Brake Fluid Check level and top off if necessary. Brake System Visual inspection of brake pads and discs for wear. Clutch Check play and adjust if necessary. Clutch Plate Check for wear. Hydraulic Clutch Actuator Visual inspection for leaks. Steering Gear Check screw connections for tightness. Visual inspection of bellows for damage. Tie Rod Links Check play, tightness, and dust caps. Power Assisted Steering Visual inspection for leaks, check fluid level, and top off if necessary. Alloy Control Arms Visual inspection of dust caps for damage and screw connections for tightness. Front Wheel Bearings Check play and adjust if necessary. Rear Wheel Bearings Check play and adjust if necessary. Clutch Release Lever Lubricate clutch release lever and secondary spring. Manual Transmission Visual inspection for leaks, check oil level, and top off if necessary. Automatic Transmission Check fluid level and top off if necessary. Drive Shafts Visual inspection of sleeves for leaks and damage. Exhaust System Visual inspection for leaks and damage. Check screw connections for tightness. Tires Check condition and correct tire pressure. Door Arrester Check operation and lubricate. Door Hinges Lubricate. Door and Hood Locks Check tightness and function of door, engine hood locks, and safety hooks. Seals Remove abraded rubber, apply suitable agent to seals for doors, hood, and roof. Vehicle Lighting Check operation. Headlights Check setting and adjust if necessary. Horn Check operation. Retractable Headlights Lubricate rods. Throttle Actuator Check for smooth running. Windshield Washer System Check function, fluid level, and nozzle setting; adjust if necessary. Headlight Washer Check operation, fluid level, and nozzle setting; adjust if necessary. Battery Check fluid level and top off if necessary. Electrical Systems Check operation of all electrical control equipment and optional extras. Heater, Ventilation, AC Check operation of heater, ventilation, and air conditioner blower. Road/Dynamometer Test Check operation of brake pedal, parking brake, brake power assist, clutch, automatic speed control, steering, heating, air conditioner, instruments, and kickdown. Visual inspection of engine for leaks. Every 30000 miles / 48000 km Task Description Engine Oil and Filter Change oil and filter. Timing and Balance Shaft Belts Check tension and condition. V-Belt and Poly-Rib Belt Check tension and condition (Power Steering, AC/Alternator). Spark Plugs Replace (at least every two years). Air Filter Replace. Automatic Transmission Change ATF, clean ATF strainer. Every 60000 miles / 96000 km Task Description Manual Transmission Change oil. Automatic Transmission Change oil in differential. Timing and Balance Shaft Belts Replace belts and inspect tensioners/rollers. Replace rollers if noisy or every other belt change. Other Required Maintenance Task Description Brake Fluid Replace every two years. For track use, replace annually or every 3 months for PCA DE events. Engine Coolant Replace every two years. Water Pump Monitor for failure after 100000 miles; replace at 120000 miles or second belt change. Sources Clark’s Garage Pelican Parts Porsche 944 Workshop Manuals YouTube Tagged:Maintenance ScheduleMiscellaneousPeriodic Maintenance Schedule Periodic Maintenance Schedule – 2.5L NA - PreviousJacking a 944 / Placing a 944 on Jack Stands – 2.5L NANext - Periodic Maintenance Schedule – 2.5L NASealants – 2.5L NA
