Impreza RS Coupe AWD F4-2.5L SOHC (1999)
Coolant: Fluid Type Specifications
Fluid Type
Use genuine SUBARU coolant or an equivalent: a mixture of 50% soft water and 50% ethylene-glycol basis coolant.
To prevent cooling system leaks, always add Genuine Subaru cooling system Conditioner (Part No. SOA635071) whenever the coolant is
replaced.
The content of this article/image reflects the changes called out by TSB - 18-74-04-mu.