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.
1999 Subaru LegacyCoolant Type & Capacity
OEM spec from the factory service manual for the GT Limited, 2.5 6, Automatic variant.
Quick Answer
Coolant Type
50/50 mixture of Ethylene Glycol Antifreeze and water
Capacity
6.30 QTS.
5.96 L
Variant
GT Limited, 2.5 6, Automatic
Source: Factory service manual — 1999 Subaru Legacy GT Limited, 2.5 6, Automatic. View full manual section →
What You'll Need
Frequently Asked Questions
- What type of coolant does a 1999 Subaru Legacy take?
- The 1999 Subaru Legacy 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 GT Limited, 2.5 6, Automatic configuration.
- How much coolant does a 1999 Subaru Legacy hold?
- The 1999 Subaru Legacy cooling system capacity is 6.30 QTS. (5.96 L).
- Can I use universal coolant in my 1999 Subaru Legacy?
- 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 1999 Subaru Legacy?
- 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.