1985 Subaru GL • 4 cylinder FWD Manual • 140,000 miles

Hi I have an 85 subaru wagon and it seems to be leaking coolent from the engine block heater and another spot I can't identify on the back side of the engine. Right now I am going through a lot of antifreeze about one whole reserve tank for every 3 trips I take is there a plug of some sort that I can buy to replace the heater or will I have to buy another heater to fix this?
March 23, 2011.

You will need to replace the heater. Check to make sure the head gaskets are not leaking. They had some problems with them. Also, check all hoses in the rear to make sure there are no leaks from them.