Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1983 Porsche 928 AutomaticFACTORY OEM SERVICE PROCEDURE
Quick Lookups: Fluids
| FLUID CAPACITIES | |||||||
|---|---|---|---|---|---|---|---|
| Fluid Type | Application | Standard | Metric | Fluid Spec | Note | S/H | |
| Air Cond Refrigerant | 4.5L Eng | 2.10 LBS. | 0.95 KG | R-12 (C CI2 F2) | S | ||
| Automatic Transmission Fluid | 4.5L Eng | 1.59 GALS. | 6.01 L | Automatic Transmission Fluid DEXRON | S | ||
| Brake Fluid | 4.5L Eng | 0.42 PTS. | 0.19 L | DOT 3 or DOT 4 Brake Fluid | S | ||
| Differential Gear Oil | 4.5L Eng | 2.11 QTS. | 1.99 L | API - GL-5, SAE 75W-90 Hypoid Gear Oil (MiL-L-2105 B) | S | ||
| Engine Coolant | 4.5L Eng | 4.23 GALS. | 16.01 L | Phosphate-free antifreeze containing Ethylene Glycol Antifreeze recommended for aluminum engines and radiators | S | ||
| Engine Oil | 4.5L Eng | 7.90 QTS. | 7.47 L | SAE 5W-20 (Below -20Deg.F to 15Deg.F), 5W-30 (-20Deg.F to 30Deg.F),10W-30 (-10Deg.F to 70Deg.F), 10W-40/50 (-5Deg.F to 95Deg.F), 15W-40/50 (5Deg.F to Above 100Deg.F), 20W-50 (15Deg.F to Above 100Deg.F) | S | ||
| Fuel Tank | 4.5L Eng | 23.00 GALS. | 87.06 L | S | |||
| Manual Transmission Fluid | 4.5L Eng | 4.00 QTS. | 3.78 L | Use Hypoid Oil SAE 75W-90 labeled "For Service API/GL5 or MIL-L-2105 B". (also for limited-slip differential) | S | ||
| Power Steering Fluid | 4.5L Eng | 0.74 QTS. | 0.7 L | Automatic Transmission Fluid DEXRON | S | ||
| Windshield Washer Fluid | 4.5L Eng | 8.50 QTS. | 8.04 L | S | |||
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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