I agree with Never Monday (Pat).
One of the maintenance
requirements on heat exchangers is to pull the tubes and clean them. And in that process they can be inspected for erosion. As well, you may find other unseen problems that may exist.
Adding chemicals to a cooling system that may keep you safe (unlike a car), while in desperate need of a motor
(see thread http://www.cruisersforum.com/forums/...mas-11902.html
), would be advancing the chances of failure. Once a cooling system has been contaminated with salt
it normally continues to erode. Then it would have to be chemically treated which may cost you hoses and water
Operating boats are much like space vehicles. Once you are away from the land your life can depend on your ability to return safely.
A leaking exchanger core
will not stop your motor
BUT if unnoticed will eventually cause unforeseen problems that will cost you more money
in the long run. A lot of boat owners treat boats like a car, and they are NOT! They are high maintenance
and require proper procedures to keep them running safely.
I would suggest doing the proper maintenance as in the instruction manual. You'll gain more experience and knowledge in the process.
Or have a professional do it if you don't feel confident......................_/)