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Originally Posted by Mercury
I assume the cold line in reference goes across the top (84 300d) of my engine. It has no insulation, but appears to have once had it. Would it be benificial to put a wrap on it? Something like a header wrap might help seperate the cold tube from the hot engine.
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I insulated mine with 1/2 inch pipe insulation from Home Depot (dark grey hard foam stuff) and attached it with tie wraps. It seems to help a little and it looks fairly stock. All the material costs less than $5.