People with inboard engines know that you must have antifreeze in the freshwater cooling system to stop it freezing.
But what about the saltwater side of the system
A bit of reserch showed that seawater freezes at -2 Deg C.
We are getting tempratures well below -2 Deg C at present and I am sure other places much colder, and I dont want to end up with a big repair bill due to a cracked cooling system
Has anyone ever had problems with the seawater cooling side freezing ? and if so, did it do any damage and is their anyway of stopping it.