Can anyone give me advice on changing the coolant on my MY95 WRX.

 

MAL26....To be honest mal...All i did(becouse mine had some in anyway)Was to drain enough out of the system..And top up with good neat bluecol...This contains the corrosion inhibitants thats required for alloy blocks/parts..I personally only use the Ethelene Glycol stuff..Not the methinol (yellowish orange)...

But if you are wanting the whole water system draining for cleaning out eta....Then be very carefull not to get a airlock..
Just refill the system very slowly..Squeezing the pipes with reasonable agression to displace the air in the pipes..Some people prefer to run the car at the same time...Be very carefull of moving parts / fans eta if you prefer the latter..Good luck..Kev.

 

put the heater on hot when you drain & refil too - as this will help with not getting an airlock.

Steve