Winterizing antifreeze?

wyrman

Well-Known Member
Jul 12, 2012
1,927
Tri-Cities, Wa
Boat Info
2007 310 Sundancer
Engines
Twin 350's, V drives
2003 Fisher 17 aluminum
90hp Honda 4 stroke
All the antifreeze I can find had ethanol and propylene glycol in it.
I thought I had read that ethanol is a no no for winterizing engines.
What if that's all I can find?
 
If thats really all you can find then you have 2 options.
Use it and then drain your motors in the spring and recollect it.
or
Drain the water out of the engines and leave them empty, no antifreeze. Thats what I do
 
The alcohol version is rough on seals, really rough. I am sure there are plenty who will say put it in, but it would really be my last resort.
Home Depot in my area is carrying both types.
 
We used automotive antifreeze when we stored cold. Can’t do better than a product made for cars. Of course, that is just for the engines, and NOT the potable water supply. I did use it for the head and holding tank if I had left overs.
5EAB86A0-6358-4575-8D07-FEE8BE83E698.jpeg
 
We used automotive antifreeze when we stored cold. Can’t do better than a product made for cars. Of course, that is just for the engines, and NOT the potable water supply. I did use it for the head and holding tank if I had left overs.
View attachment 113448
Auto coolant - ethylene glycol - should never be used for winterizing anything except what it's intended for. It's very toxic to people animals and other living things. If you put it in the head and holding tank, or spill some (no doubt you will), guaranteed it finds it's way into the lakes, rivers and oceans we should be taking better care of. Use only propylene glycol (pink) and the small portion of alcohol found in some brands will harm nothing in your engine or in your potable water system.
 
Auto coolant - ethylene glycol - should never be used for winterizing anything except what it's intended for. It's very toxic to people animals and other living things. If you put it in the head and holding tank, or spill some (no doubt you will), guaranteed it finds it's way into the lakes, rivers and oceans we should be taking better care of. Use only propylene glycol (pink) and the small portion of alcohol found in some brands will harm nothing in your engine or in your potable water system.
Marinas around here have used it for years. Pouring it down a toilet that gets pumped out at a marina pump out seems pretty harmless. Any spillage, which frankly doesn’t happen, would end up on the floor of the bathroom and not in the lake. It’s a real stretch to even suggest that.
DFCF01F7-FBC2-4BA0-A5DA-E17F2EB62E19.jpeg
 
Marinas around here have used it for years. Pouring it down a toilet that gets pumped out at a marina pump out seems pretty harmless. Any spillage, which frankly doesn’t happen, would end up on the floor of the bathroom and not in the lake. It’s a real stretch to even suggest that.
View attachment 113453
Well, you just do what you do, ... "cause we been doing it for years."
 
Marinas around here have used it for years. Pouring it down a toilet that gets pumped out at a marina pump out seems pretty harmless. Any spillage, which frankly doesn’t happen, would end up on the floor of the bathroom and not in the lake. It’s a real stretch to even suggest that.
View attachment 113453
That pump out ends up in the local sewage system, so the antifreeze ends up in the local waterways. No different then pouring it down the drain at your house. Environmentally horrible.
 
That pump out ends up in the local sewage system, so the antifreeze ends up in the local waterways. No different then pouring it down the drain at your house. Environmentally horrible.
You would think a long-time boater would know better and have a little respect for our environment. Never to late to make a change. Even us old dogs can still learn a thing or two. Thanks for the posts, guys!
 
There have been a few guys that have summarized on land and dumped what is clearly automotive antifreeze on the ground when they start up their I/O oats on the muffs. Like most marina’s, people have lots of dogs around, and I cringe every time I see someone doing that. Dogs love the smell and sweet taste of antifreeze.
 
You would think a long-time boater would know better and have a little respect for our environment. Never to late to make a change. Even us old dogs can still learn a thing or two. Thanks for the posts, guys!
Just to be clear here, I stored my boat at our local marina and had them winterize it. That was and may still be the prevailing practice for cold storage. It still appears to be legal in Michigan so I would not leap to conclusions about who has respect for the environment when you do not have a command of your facts.
FFE34259-17AA-4882-AFE4-87EF21070032_1_201_a.jpeg
 
Greg, we never winterized the engines on Beachcomber, or anything for that matter except blowing out the fresh water system because we often used her in the winter. We put two small heaters in the engine room and set them at the 750W setting so as not to blow a breaker. Worked fine.
 
Greg, we never winterized the engines on Beachcomber, or anything for that matter except blowing out the fresh water system because we often used her in the winter. We put two small heaters in the engine room and set them at the 750W setting so as not to blow a breaker. Worked fine.
I have heard of another guy not winterizing his boat either. I have been pulling mine out and storing it at home the past couple of years, but I'm leaving it in the water this year. I still want to winterize it after the Christmas parade, we are both going to be retired before 2022 and we're planning on going to Az to visit family for a few weeks in February. I'd like to be able to not worry about it while we're gone. Do you still have your bubbler? If so, want to sell it?
Have fun in sunny Arizona.
 
Just to be clear here, I stored my boat at our local marina and had them winterize it. That was and may still be the prevailing practice for cold storage. It still appears to be legal in Michigan so I would not leap to conclusions about who has respect for the environment when you do not have a command of your facts.
View attachment 113464
Oh, you're off the hook then? And, if you read more carefully what you are doing in concert with your marina is clearly not legal with ethylene glycol. Fact. Take some responsibility for the hazardous waste that you create, unnecessarily. There is another option available to you.
 
There have been a few guys that have summarized on land and dumped what is clearly automotive antifreeze on the ground when they start up their I/O oats on the muffs. Like most marina’s, people have lots of dogs around, and I cringe every time I see someone doing that. Dogs love the smell and sweet taste of antifreeze.
Apparently some guys just don't give a darn.
 
Dog, not boat related...years ago I was working on my truck and had drained the antifreeze into a bucket. I got up to go to the toolbox for a wrench turned around and there was my dog drinking from the bucket. I don't think he took many laps at it but who knows. A few months later he got sick, whatever it was came on fast, and it didn't take long. The Vet couldn't figure out what was wrong, his kidneys were failing amongst other things, we had to put him down. He was only 8yrs old and up to that point in good health, I've often wondered if the antifreeze had something to do with it.:(
 

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