if you're going to use caustic soda on handlebars be careful because: 1.it will also very slightly weaken the bars, espscially if you use to much and take off too much metal aswell as the anodising! 2.it will very slightly reduce the diemeter of where the stem clamps the bars and it may eat through the textured part which the stem grips on causing the bars to slip more readily pollish it with autosol, then when it starts visibly be oxidising pollish it again...repeat this a few times the it seems to retain it's shine better! i also use a little bit of car wax on my echo frame...i polished it with autosol, it came up really shiny so then i waxed it and if you keep it waxed it stays shiny