Is this safe to use for winterizing?

I am no expert, but it looks ok to me. I am guessing that the "don't use in engines" is related to cooling system antifreeze.
 
Could be OK, but can't tell from the description. What are the ingredients?

Did you link to the right thing? That says -60*C... which is -76*F, not -100*.

Where is the boat stored? Do you need that much protection? If you want to play it safe, the stuff that the boat stores carry is roughly $5/gallon and you only need a few gallons.
 
Could be OK, but can't tell from the description. What are the ingredients?

Did you link to the right thing? That says -60*C... which is -76*F, not -100*.

Where is the boat stored? Do you need that much protection? If you want to play it safe, the stuff that the boat stores carry is roughly $5/gallon and you only need a few gallons.

It's the same brand but I got the -100, just grabbed the first link to it that I found. It says no alcohol and has rust inhibitors. It was only $3.75/gal. It's stored outside in North GA. We get below freezing during the winter, but not a consistent freeze for weeks on end. Just playing it safe.
 
It certainly won't hurt to get deeper protection, but it's absolutely not needed. If you can find the regular -50*F stuff, that is WAY MORE than enough - even in climates much colder than yours. But with the little you need, we're probably only talking about a $1 or $2 total difference - so sort of a moot point.

What the ingredients ARE is more important than what they are not.
 
You do not want to use the alcohol based anitfreeze - it will protect you from freezing, but does not provide the corrosion protection you also want during the storage period, and it is hard on the rubber componets in your engine and water system. Look for propylene glycol, not ethylene glycol (contains alchohol). The cheap stuff at Walmart is ethylene glycol.
Like the OP, I am not really in a hard freeze area, but I generally store my boat unused from mid Nov - mid March, I winterize - fog and fill with antifreeze more for the protection from rust/corrosion than freezing.
 
I would not use it for the engines. It says not too so why risk a $10K engine for a couple bucks on proper winterizing antifreeze. I would use it in the water systems though.

On a similar note, I went to a hardware store this fall to buy non-tox for my water systems. They had two types. one was generic branded pink plumbing antifreeze and another was slightly more expensive branded non-tox (I canlt recall the brand). I grabbed the cheaper one and headed to the cash. The guy at the store asked me "is this for your boat?". When I said yes, he said not to use it. He said that it was risky with plastic piping and the seals on boat water systems and could cause leaks. So I switched. Not sure if he was full of $H17 or not, but I am taking no chances.
 
It certainly won't hurt to get deeper protection, but it's absolutely not needed. If you can find the regular -50*F stuff, that is WAY MORE than enough - even in climates much colder than yours. But with the little you need, we're probably only talking about a $1 or $2 total difference - so sort of a moot point.

What the ingredients ARE is more important than what they are not.

Here is what the bottle says. Doesn't list what they are:
IMG_3374.jpg
IMG_3375.jpg
IMG_3376.jpg
 
The label clearly states it's for water line (potable water) use, and specifically not to use it in an engine. I wouldn't use it in a engine.
 
Well, since it CLEARLY says all of the following:

-- Use with waterlines (metal waterlines = copper)
-- Contains ethanol
-- DO NOT use in engines

And, it doesn't give a clear definition of what it does contain... There's no way I would use it - not to try and save a couple bucks when engines are so expensive.
 
Guys check your bottles. Mine says "don't use in engines", but adds "as coolant/antifreeze."

I would note that the bottle says contains ethanol, which I believe is alcohol.
 
Msds shows propylene glycol. Same as all the other antifreeze brands. Has corrosion inhibitors. I would use it no problem unless the bottle says contains alcohol which indicates a change in formulation, then no way. Based on the picture above, no way.
 
It says don’t use in gasoline or Diesel engines so why use it?
My guess is that it contains alcohol.
 
There are 2 kinds of the pink stuff. Some are called RV antifreeze, which are for fresh water systems. They may also be used in boat fresh water systems (as in toilets and sinks,) The ones for ENGINES specifically say that in the description. Not hard to tell the difference. The engine versions also cost more.

You could also use the green stuff. That's what we all used years ago. However, if you care about the environment they should be drained before running the boat in the water next Spring.
 
There are 2 kinds of the pink stuff. Some are called RV antifreeze, which are for fresh water systems. They may also be used in boat fresh water systems (as in toilets and sinks,) The ones for ENGINES specifically say that in the description. Not hard to tell the difference. The engine versions also cost more.

You could also use the green stuff. That's what we all used years ago. However, if you care about the environment they should be drained before running the boat in the water next Spring.

To avoid confusion. When you say you can use the green stuff, you must mean for the engine winterization only. You should NEVER use the green poisonous stuff in the boat water tank and water systems. It is a toxin and can cause blindness and serious illness or death. and if it is flushed out of the engines on land and a dog drinks it (it tastes sweet and they will drink it) they may die. Just buy the engine erosion of non-tox and do it right.
 
I bought this it’s literally going on my motors on Friday, on the raw water side
Maybe you want to rethink that plan?

Since it says "Do not use in gasoline or diesel engines." And "THIS PRODUCT IS NOT DESIGNED AS A HEAT TRANSFER FLUID FOR CLOSED LOOP SYSTEMS OR AS AN ANTIFREEZE FOR INTERNAL COMBUSTION ENGINES." (EMPHASIS original to the packaging).

In legal documents when something is in ALL CAPS it means PAY ATTENTION this is really important. I don't think they could be more clear that it's not for use in an engine, raw water side or not. But it's your engine.
 
Maybe you want to rethink that plan?

Since it says "Do not use in gasoline or diesel engines." And "THIS PRODUCT IS NOT DESIGNED AS A HEAT TRANSFER FLUID FOR CLOSED LOOP SYSTEMS OR AS AN ANTIFREEZE FOR INTERNAL COMBUSTION ENGINES." (EMPHASIS original to the packaging).

In legal documents when something is in ALL CAPS it means PAY ATTENTION this is really important. I don't think they could be more clear that it's not for use in an engine, raw water side or not. But it's your engine.

From what you wrote it leads me to believe they mean in a closed cooling system in place of the green antifreeze or a dexcool type. Not meaning a fresh water cooled engine.
 
From what you wrote it leads me to believe they mean in a closed cooling system in place of the green antifreeze or a dexcool type. Not meaning a fresh water cooled engine.

No. It means both. I very very rarely do this in forums, but your interpretation is flat out wrong.

It clearly states DON’T USE IN AN ENGINE. Period. Not don’t use this this specific part of an engine.

Your application is as a wintering antifreeze for the raw water side right? The bolded text specifically says not to do that in an engine.

Do what you will.
 

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