Late model A4, raw water cooled. After having the water jacket rust through at the #4 cylinder/exhaust manifold area( able to weld and repair), my thought was to add something to the antifreeze to coat the water jacket walls to prevent further corrosion while the boat sits for 6 months.
I believe public water supplies use phosphates for this purpose - would this be an option?
I believe public water supplies use phosphates for this purpose - would this be an option?
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