i liked part about him saying 1% is in there to help keep your metal in engines from rusting.he said usually when used in engine ,you have water in there, so, they add 1% anti-rust stuff so your metal will not rust. interesting, could that helpkeep our barrels from rusting when we swab with alcohol? .hmmmmmmmmmmmmmmm i think i paid 1.19 at wal-mart for 12oz bottle.i bought 10 bottles for my truck.