I have twin 1988 volvo penta v8's and i was planning on switching to a closed system however i saw the information below, is this correct
"If you own an older boat. You may not be able to install a new Fresh Water Cooling System. The rule of thumb is One hundred and fifty hours of salt water use. And about two hundred and fifty hours of fresh water use. After that. It is probably too late to install a fresh water cooling system without severe damage to your engine. You can perform a quick check: Remove the thermostat housing cover. Then look inside to check for any sign of scaling rust. If you see rust build up. It is probably too late. Engine Blocks are made from Cast Iron. And Cast Iron is Porous! Salt will embed itself in the cast iron and then, if you add antifreeze, the coolant will become thick and cause your engine to overheat.
Source http://www.boatfix.com/freshkits.asp bottom of page.
Tags: