[aaaedgarpoe]

If Copper Benzoate forms on a copper surface, is it hard and dry or pasty, or what?  I've got  a DC motor that needs contact immediatly after switch-on after being dormant for years in a warm humid storage environment with benzoyl peroxide and the commutator is copper!  I have evidence that copper benzoate will from on the DC motor's commutator, but will the motor brushes push aside the copper benzoate within the first 1/10th of a second?

Thank you.