Left over Engine Ice in container question?

I have some left over Engine Ice still in container from a few years ago that has been stored outside in the un-heated garage.. The winters here get pretty cold, this winter has been a cold one with temperatures dipping close to -40 below......

I was wondering if the Engine Ice would still be good? Thanks for your replays...
 
I would thin so . Regular coolant is good for a few years in your bike/car and its going through being heated ad cooled a lot
 
look at it...see if it looks separated....if it does toss it. But most of the time its fine.
 
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