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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.
1991 Audi 100Coolant Type & Capacity
OEM spec from the factory service manual for the Base variant.
Quick Answer
Coolant Type
50/50 mixture of Ethylene Glycol Antifreeze and water
Capacity
2.10 GALS.
7.94 L
Variant
Base
Note: Use Phosphate-free Antifreeze.
This vehicle's factory manual
The coolant spec is above. This opens the fluids section of the 1991 Audi 100 Base factory book.
Other specs:All specs
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Frequently Asked Questions
- What type of coolant does a 1991 Audi 100 take?
- The 1991 Audi 100 requires 50/50 mixture of Ethylene Glycol Antifreeze and water. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the Base configuration.
- How much coolant does a 1991 Audi 100 hold?
- The 1991 Audi 100 cooling system capacity is 2.10 GALS. (7.94 L).
- Can I use universal coolant in my 1991 Audi 100?
- It is strongly recommended to use coolant that meets the 50/50 mixture of Ethylene Glycol Antifreeze and water 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 1991 Audi 100?
- 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.