psneeld
Guru
A more reasonable approach might be to change to a silicate-free coolant such as CAT's ELC extended life coolant. Such a choice would eliminate concerns about high silicate levels, problems with nitrates, and the added expense and complexity (read that as point of potential failure) that are associated with adding another component to the engine.
I know it is not much fun and doesn't provide anything in way of bragging rights or bling, but simply cleaning the cooling circuit, maintaining the pump, and using the proper coolant is about all you have to do to obtain long and trouble-free life from the jacket water cooling circuit of a recreational boat engine.
I know and that's what I've done to my boat and powerstroke...but there is another "option"...train of thought...whatever you want to call it...
Lot's of people do it for reasons they feel comfortable with...and it's not all the "diesel bling" thing either.