What type of coolant does a 1990 Porsche 928 take?

The 1990 Porsche 928 requires Phosphate-free antifreeze containing Ethylene Glycol Antifreeze recommended for aluminum engines and radiators. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the Automatic configuration.

How much coolant does a 1990 Porsche 928 hold?

The 1990 Porsche 928 cooling system capacity is 4.23 GALS. (16.01 L).

What happens if I use the wrong coolant in my 1990 Porsche 928?

Using coolant that does not meet the OEM specification can cause corrosion, gasket damage, and overheating. Always verify the correct coolant type before topping off or flushing the system.

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.

1990 Porsche 928Coolant Type & Capacity

OEM spec from the factory service manual for the Automatic variant.

Quick Answer

Coolant Type

Phosphate-free antifreeze containing Ethylene Glycol Antifreeze recommended for aluminum engines and radiators

Capacity

4.23 GALS.

16.01 L

Variant

Automatic

Note: Manufacturer's approved fluid only.

This vehicle's factory manual

1990 Porsche 928: confirm the engine, trim, or drivetrain to open the available repair and diagnosis sections.

Open this vehicle’s service manual

Other specs:All specs

What You'll Need

Engine Coolant / Antifreeze

Phosphate-free antifreeze containing Ethylene Glycol Antifreeze recommended for aluminum engines and radiators for Porsche 928

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Frequently Asked Questions

What type of coolant does a 1990 Porsche 928 take?: The 1990 Porsche 928 requires Phosphate-free antifreeze containing Ethylene Glycol Antifreeze recommended for aluminum engines and radiators. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the Automatic configuration.
How much coolant does a 1990 Porsche 928 hold?: The 1990 Porsche 928 cooling system capacity is 4.23 GALS. (16.01 L).
Can I use universal coolant in my 1990 Porsche 928?: It is strongly recommended to use coolant that meets the Phosphate-free antifreeze containing Ethylene Glycol Antifreeze recommended for aluminum engines and radiators specification. Universal coolants may not provide the correct corrosion protection for your engine's materials.
What happens if I use the wrong coolant in my 1990 Porsche 928?: Using coolant that does not meet the OEM specification can cause corrosion, gasket damage, and overheating. Always verify the correct coolant type before topping off or flushing the system.