Minnesota Classic Glastron Forum

General Category => General Discussion => Topic started by: Glastron1 on October 04, 2018, 06:32:37 PM

Title: Winterizing CV-19 w/ 383 stroker (-50 or -100?)
Post by: Glastron1 on October 04, 2018, 06:32:37 PM

I am heading up to PA to winterize my CV 19 Jet (merc 383 Stroker) this weekend.  Bought RV Antifreeze rated for -50.  Used that last winter but it was in VA last winter.  After buying the -50 I read about  -50 might freeze at +12 degrees.   Now that was a unexpected.  Thinking about going back to get the -100 degree stuff.  Boat spends winter in an unheated barn.  NW PA gets cold.  Wanted to ask what do you guys in the colder MN areas use.

Always appreciate your feedback.

Thanks

Title: Re: Winterizing CV-19 w/ 383 stroker (-50 or -100?)
Post by: still_fishin on October 04, 2018, 07:09:13 PM

Where did you read that it might freeze at +12? If so,  I should be thoroughly screwed in the spring,  and every spring previous to this one.  Short answer is I've never had a problem with the -50. Others will chime in,  as they should.

Is this the first time you have attempted this?

Sent from my SM-G950U using Tapatalk

Title: Re: Winterizing CV-19 w/ 383 stroker (-50 or -100?)
Post by: Glastron1 on October 04, 2018, 07:23:27 PM

https://www.jamestowndistributors.com/userportal/document.do?docId=1144 (https://www.jamestowndistributors.com/userportal/document.do?docId=1144)

Above is a quick write up on RV antifreeze and the manufacturers terminology.

Have winterized the CV 19 twice now with the -50.  But now it has moved north.

Winterizing the Etec on my CV16 is much easier.

Title: Re: Winterizing CV-19 w/ 383 stroker (-50 or -100?)
Post by: Plugcheck on October 05, 2018, 09:36:38 AM

I know it sounds alarming, but the truth is not quite how it sounds.  PG, propelene Glycol rated at -50 may very well form ice crystals at 20 degrees, but since we are not attempting to operate the cooling system at that temperature, there is no problem with that occurring.  Most important to the discussion however, is the fact that water expands(and density changes) when frozen. It is this feature that allows life on the planet, but also cracks our blocks, heads, exhaust, etc.   PG and EG(Ethelene Glycol) do not.  In fact PG actually contracts when frozen.  The most important thing is to get the water out of our beloved watercraft before winter whether by draining or displacing with PG.  I kind of do both, but that is another thread that will likely resurface soon due to nature.  Hope this calms your fears.

Title: Re: Winterizing CV-19 w/ 383 stroker (-50 or -100?)
Post by: Glastron1 on October 05, 2018, 11:28:01 AM

Plugcheck - Thanks for the feedback & explanation.  I just got back from store.  Bought the West Marine solution that is rated to -100.  My thoughts were that it's just a few buck more (abt $48 for 6 gallons, w/ discount) and will better dilute any water that does not get blown out. - Mark

Title: Re: Winterizing CV-19 w/ 383 stroker (-50 or -100?)
Post by: fireman24mn on October 07, 2018, 02:20:54 PM

I have used -50 for many years and never had a problem.

Title: Re: Winterizing CV-19 w/ 383 stroker (-50 or -100?)
Post by: Plugcheck on October 07, 2018, 02:43:00 PM

Seems a bit pricey, Menards has the -50 for sale at $1.98 per gallon.  Not sure if it's special order, but they sell the -100 for $5.99 a gallon.  I buy 5 gallons each year, does the boat and camper. 

Title: Re: Winterizing CV-19 w/ 383 stroker (-50 or -100?)
Post by: CVX Fever on October 08, 2018, 09:51:21 AM

I just drain them, air doesn't freeze. But do what gives you a warm fuzzy over the winter. My warm fuzzy is knowing there is nothing in the block that has a potential to freeze no matter how cold it gets. I used to bother w/RV antifreeze when I first got into boating, but don't anymore.