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.
1991 Buick Park AvenueCoolant Type & Capacity
OEM spec from the factory service manual for the Ultra, 3.8 1 variant.
Quick Answer
Coolant Type
50/50 mixture of Ethylene Glycol Base Antifreeze and water
Capacity
12.50 QTS.
11.82 L
Variant
Ultra, 3.8 1
Note: GM Specification 1825-M.
This vehicle's factory manual
1991 Buick Park Avenue: confirm the engine, trim, or drivetrain to open the available repair and diagnosis sections.
Other specs:All specs
What You'll Need
Related for Your 1991 Buick Park Avenue
Frequently Asked Questions
- What type of coolant does a 1991 Buick Park Avenue take?
- The 1991 Buick Park Avenue requires 50/50 mixture of Ethylene Glycol Base Antifreeze and water. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the Ultra, 3.8 1 configuration.
- How much coolant does a 1991 Buick Park Avenue hold?
- The 1991 Buick Park Avenue cooling system capacity is 12.50 QTS. (11.82 L).
- Can I use universal coolant in my 1991 Buick Park Avenue?
- It is strongly recommended to use coolant that meets the 50/50 mixture of Ethylene Glycol Base 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 Buick Park Avenue?
- 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.