I have a '14 HPDI 175VZ. I'm trying to prepare for spring and wanting to make sure I have everything in check before then. Boat ran great all 2020 and hoping for the same this year. I "winterized" the motor by running stabile through the engine and drained the lower unit oil. My questions are:

1. What filters need replaced? Is there a website I could reference this at? Not finding anything.

2. This one has my stressed out the more I think about it but I didn't have the lower unit oil on hand when I drained it so I just put the drain plug back in and covered the motor with a tarp. I have the oil now but worried about any issues I may have created by leaving it empty in the cold temps.

3. Any other maintenance I should do before spring besides filters and refill the lower unit?

Any info is appreciated.

Thank you