Yes, I do. It's a complete load of crap. Usually it's someone on a forum who "had a friend, who's uncle's, wife's, sisters's, brother's, dentists, cousin saw a Tohatsu once". There is zero difference from brand to brand as to corrosion issues. In the end it always come down to electrical activity in the water and condition of the anode(s) on the engine. There used to be a difference years ago and the best at that time was OMC. Today they are all the same