Had my merc 7.4 I/O prof. winterized last year. Choose their deluxe(?) winterizing package. Was supposed to bring it back to them this past summer before using it, so they could get it ready to use (@ no charge). Was doing fiberglass work on boat this summer; & with weather problems here & my summer work schedule, I did not get boat de-winterized (& not splashed). Can I just leave it (winterized) for this upcoming winter, or does it have to be redone each year?
thanks.
thanks.