Stop in for a cup of coffee

Hey anyone ever route there heater hoses thru fenders in copper pipes? To make engine compartment look cleaner.
Copper and steel dont mix. Otherwise go for it. As long as no steel touches copper. Copper sink drain in my basement. Original owner used coat hangers to hang stuff to dry,and coat hangers were there when i moved in. Wherever there was a coat hanger,the pipe was corroded through. Thats why there is copper pipe strap and copper nails.