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.
2003 Subaru ForesterCoolant Type & Capacity
OEM spec from the factory service manual for the X, Automatic variant.
Quick Answer
Coolant Type
SUBARU Coolant or equivalent: a 50/50 mixture of Ethylene-Glycol Coolant and soft water
Capacity
7.20 QTS.
6.81 L
Variant
X, Automatic
Source: Factory service manual — 2003 Subaru Forester X, Automatic. View full manual section →
What You'll Need
Frequently Asked Questions
- What type of coolant does a 2003 Subaru Forester take?
- The 2003 Subaru Forester requires SUBARU Coolant or equivalent: a 50/50 mixture of Ethylene-Glycol Coolant and soft water. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the X, Automatic configuration.
- How much coolant does a 2003 Subaru Forester hold?
- The 2003 Subaru Forester cooling system capacity is 7.20 QTS. (6.81 L).
- Can I use universal coolant in my 2003 Subaru Forester?
- It is strongly recommended to use coolant that meets the SUBARU Coolant or equivalent: a 50/50 mixture of Ethylene-Glycol Coolant and soft 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 2003 Subaru Forester?
- 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.