I am trying to drain and flush the cooling system on a '96 Stratus. The Chilton's manual says to use a socket wrench with a universal joint, but it does not say what size. The largest I have are 3/4" and 19mm, but they are not big enough. Can somebody tell me the correct size; I don't want to have to buy a bunch of them just to get the right size by trial and error.
Note: the drain valve does not have a hex head, just a straight-across "handle," but it is very difficult to get at.
Or is there a better way?
-=- Alan