Hose Discoloring
The color blue and black are smooth and the outside over time has shown discoloration. The red and grey color hose have yet to show discoloration. A few owners are supplying their own stainless lines. To do so requires AN 12fittings and in most cases about 5’ of ¾ in i.d. line.
The color blue is by far the most popular color used.
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