I would like to tap a barbed fitting into the aluminum gearcase of my
outboard motor. I cannot find stainless barbed fittings and I assume brass
and aluminum touching under salt water is a no- no. If I tap the aluminum to
take a stainless 1/4" bushing and then thread in a 1/8" barbed brass fitting
will there still be corrosion problems. There are several zinc anodes on the
motor and aluminum hull.