been hearing that dot 5 silicon base brake fluid is not corrosive as all other[ dot 4 and 3] anyone have insights on this?  im considering using it on my 46 chevy truck cause once the wheel cylinders leak aliitle the corosion is bad  im in process of replacing all cylinders and am considering this dot 5    it is important to get all the old fluid out i understand which is somewhat a pain but if it stops the corrosion its worth it to me   but i may be missing something so id appreciate any wisdom