ive used it before i ran and had gotten water inside a servo, and well.. the servo stopped workin.. AFTER i sprayed it again , it came back to life.. so waterproofing and displacing water are 2 different things..

There is a spray that amsoil makes that does water proof (i have since changed from cx to the amsoil spray) that works perfect.. i have intentionally takin a junk servo and some old radio gear, sprayed it with the amsoil spray sat it in the sink (underwater) and she worked while submerged.. great product, and cheaper than corrosionx