A little while ago I was given a tin of 'ancient' coolent which had been out of sight in someones shed. "Bluecol" made by smiths industries. It says on the tin its etylene-glycol based.
I thought for a while maybe an automobile museum might like it, but then decided they must have dozens of battered old Bluecol tins.
My thinking is now, that if the tin is not rusted on the inside i would use the coolent in my 2002 Corolla. I dont like to waste things and it needs a coolent top up; but is this a daft idea?