I back flush the A/C unit with 100 below anti freeze until it runs out the inlet on the bottom of the boat. Then I test the anti freeze to see what the temp reading is. I have been using the purple 100 below for the last two years in everything including engines.

Thanks for all the input, much appreciated!
To those that store their boats in a heated garage, to what extent do you prepare your boats for the long winter months??

When I did store warm( before the price went out of sight ) I always drained the water system and put a light dose of anti freeze through it. Drained the blocks, ran antifreeze through just to lubricate. Backed flushed the A/C just to be safe. always changed oil before storing.

sorry to jump in, but since we are on the winterize topic, why start a new thread. After you guys run anti freeze through the motors, do you drain the blocks? My first year I did, second year I didn't. Both years no damage, yet am I ok to leave just anti freeze in the blocks without draining? Thanks

I have always left the anti freeze in, I have done this with my past boat for 8 winters and this boat for 6 winters with no issues, I figured leaving it in would prevent rusting internaly

Thanks for all the input guys!!

Thanks, and sorry for the Hijack verbi!:drink:

No, no need for appologies!! It is all related and good info!!

It's way too early for winterizing!! I prefer to ignore the fact the calendar is creeping towards the cooler WTX

I hear ya!
I wish I could go south for the winter!!