useing to much antifreeze is a bad idea, neat antifreeze freezes quite easy -6 c iirc
if the coly you had is anythign liek the cold we have your engine is knackerd. prob find when it thaws the radiator is poped, the heater matrix, waterpump housing and the block will have poped core plugs if not cracked.
i've had 7 cars turn up today with sever frost damage as in engine will be comeign out to put it right type damage. and 3 plant/tractor. the funny bit is 5 of them are from the same family
