Antifreeze: -50, -60, -100???

G

GripB

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Putting together my winterization list and was doing some price shopping today at West Marine (they have rebates on antifreeze). While I was there, a salesman suggested that I use -60 antifreeze (I'll be storing the boat on the hard in northern MD). Must I use -60? Would -50 be OK? Let me know. Thanks.

Greg
 
have you ever been in -50 degree weather? Or even - 20 degrees? I would hope that -50 AF is more than sufficient in MD.
 
The value of getting the -60 would be that if you had some water left in the system and it mixed with the antifreeze, the net dilluted result would be slightly better and have a lower freeze point than -50. Not much, but enough to make a difference?
Jim
 
quote:
Originally posted by cwms

have you ever been in -50 degree weather? Or even - 20 degrees? I would hope that -50 AF is more than sufficient in MD.

Click to expand...
I hear ya cwms and that's exactly what I was thinking, though I'm curious as to how accurate those ratings are.

Greg
 
quote:
Originally posted by 32carv

The value of getting the -60 would be that if you had some water left in the system and it mixed with the antifreeze, the net dilluted result would be slightly better and have a lower freeze point than -50. Not much, but enough to make a difference?
Jim

Click to expand...
Interesting point Jim.

Greg
 
I use -50, as does our marina, you'll be fine with it.
 
Been using -50 for years.
If done right, there is not water hiding anywhere!
Run engine up to temp before doing it.
 
-50 it is, especially after hearing from the boys in NY (HOGAN and CurrentSea) with their comparable (if not colder) winter climate than me.

Off to composing my next winterization question(s) :).

Thanks again!

Greg
 
-50 great enough for any winterization using the right amounts. One gl never enough just for a generator.
 
I use both. There is always a little residual water in my tank. I run the -50 thru to get most of the water out. Then 2 gal of -60 to give me piece of mind. After it mixes with the water, it is something less than -60. Good luck.
 
Try putting a bottle of each of them in the freezer at zero, they will slush up and get hard, but not expand. That -50, or -60 is the burst temp of a water pipe, not freeze temp. They will start to solidify at about 15* F for the -50 and a bit lower for the -60. I use the -100 because it stays liquid way down to about -60 or so, that way even if some water did not drain, you will not have a problem...
 
I use -60 for engines and genny and -50 for the water system and AC. If you are thinking hard about it then the price difference is worth the peace of mind for $1 per bottle more for the -60.
 
I have always followed my mechanics advice, start with -50 and finish with.
-100. The extra $$ is sure to be less than almost any repair.
 
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