Join Date: Oct 2001
Location: Marina Del Rey CA
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Rep Power: 16
I ran the engine per whatever the chemical additive said, then drained it via the bottom most hose, in my case below starboard side of the heat exchanger. I also used a hose from the dock faucet to put water pressure through the system via the disconnected engine hose, both ways. That helped bring whatever loose scale out, then refilled with distilled water, ran the engine to hot, then drained again when cooled enough not to scold me.
Did this till the water ran clear, then filled with 50-50, and if you have a water heater leave one hose disconnected from the engine side and use a funnel to pour antifreeze into it till it overflows out. This helps purge air from the system, and remember to further bleed the system via the small bolt on the top of heat exchanger, the one in the middle. Of course the level must be checked again at the header after a run, and you can feel ok about the job if all the hoses feel hot to touch, cold ones tell you there's still air in the system.
All the best
Ignorance will let you die in innocence, but awareness will at least let you know what the mistake was.