To test for Opti-Coat Pro, make sure your truck is clean (preferably decontaminated) and if water beads you're still protected. No Rinse and No Rinse Wash & Wax have similar cleaning capability, so the only difference is the carnauba wax for extra protection. Either product can be safely used weekly. The option to wax or seal is your choice, but neither will be durable on OCP. It is not necessary to re-coat the entire vehicle if damaged.