winterize it only if you want it to work in the future
No.
The Willis Report - 2011 Winterize Your Car was released on: USA: 10 December 2013
2 bags of concrete
you go to it and throw it away
Follow the link for the steps.
winterize 2013 yamaha 4 stroke twin jet boat
Drain the water and put antifreeze in the pipes
http://www.ehow.com/how_2087098_winterize-jet-ski.html
At ASK.com revealed lots of possible answers.
My first instinct is to say "Your kidding me rite?". However, I'm curious, why do you fell you need to winterize your AC unit?. My second question is what type of AC unit do you have?
what type oil to use on 4stroke 2.5mercury outboard