Is this safe to use for winterizing?

[GypsmJim]

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.

We were talking about engines. That's why I referenced ethylene glycol as an alternative. Yes, it even says its toxic on the bottle. And also yes, it needs to be drained from the block before the engine is run in the water. That in itself makes it cheaper to use because you can store it and use it again next year.

In my neighborhood we have a leash law, so no dog would ever be licking my grass even if I were to accidentally spill some in the driveway.

As far as that crap being discussed in this thread, no way would it ever find its way in MY engine. Besides, based on the quoted cost its not cheaper than the real marine grade engine product. In fact, right now West marine has it on sale.

 

[firecadet613]

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.

Not the product I use but you typed not designed as a heat transfer fluid, ie in place of dexcool / antifreeze in a running engine. You'd be fine to use the aforementioned product in an engine. I've used pink -50 in my bowrider with no ill effects

To each their own. That being said, my marina uses the blue greenish -200 for engines and -100 for the water system on my 37'.

 

[b_arrington]

Not the product I use but you typed not designed as a heat transfer fluid, ie in place of dexcool / antifreeze in a running engine. You'd be fine to use the aforementioned product in an engine. I've used pink -50 in my bowrider with no ill effects

To each their own. That being said, my marina uses the blue greenish -200 for engines and -100 for the water system on my 37'.

This product is clearly not acceptable to be used in an an engine in any capacity.

I copied directly from the label. The warning has 2 parts:

1. Do not use as a heat transfer fluid. Translation: not to replace the engine coolant, ie Dexcool, etc.
2. Do not use as an antifreeze. Translation: don't use it to winterize an engine.

Antifreeze is NOT the same as a coolant (heat transfer fluid). Water can be an coolant, but is not an antifreeze. An antifreeze is not always a coolant. Hence, an antifreeze coolant such as Dexcool.

Further is an explicit instruction NOT to use in an engine.

Additionally the product contains ethanol (alcohol). It has been discussed here not to use winterizing AF containing alcohol. We all know that ethanol is bad for rubber hoses, etc. Also the alcohols separate over the winter and can reduce the freeze protection. This is from seveal AF manufactures recommendations.

West Marine's article on selecting antifreeze explains why not to an AF with alcohol.