ive had 3 gs's (with wires on 2) from new in the last 6 years and have always used muc off with no issues or problems, brilliant stuff, i buy 10 ltrs for £20 off flee bay posted, i always finish off with spraying gt85 all over the bike after then polish it up to a shine, gt85 is the best product ive used on a bike, never had any corrosion tarnishing issues