Disappearing coolant no leaks when pressure test- is it head gaskets

leaking_subaru
Tue, 01 Mar 2011 20:17:59 +0000
Maintenance/Repairs

1998 subaru coolant has disappeared 2 times with highway driving last June and November but it exhibited no leaks visibly or under pressure test. Put flourescent dye in.

Found a hairline crack in neck of radiator under hose and replaced in december. End of february with local driving after siting for 5 days it overheated, sucked up reserve tank and needed a quart of coolant in the new radiator.No leaks under pressure test again and tested ok on turnpike. No smells oil ok. Doing tailpipe heat dye test to see if it’s burning coolant and needs head gaskets. Big bucks and want to be sure that surgery is really needed. Help !

10 posts - 6 participants