Gas line anti-freeze

Sorry about this but I posted the question below on the 20th and now I can't see any posts before the 21st. Perhaps someone could tell me
how to find it, plus any replies, or just repost the answer.
Many thanks.
------------------ Original question:
Here in Canada our Canadian Tire store (auto parts dept) sells gas line antifreeze for CDN$12.99 for 4 litres. It also sells 99.9 % pure Methyl Hydrate as stove and fondue fuel (and some other uses I don't recall) for CDN$7.99 for 4 litres.
I'm not a chemist (nor a chemical engineer or engine specialist), so my question is: can 99.9% Methyl Hydrate can be used as gas line antifreeze?
Also, does anyone know the difference between these two products? (Other than price.)
Thanks for all replies.
Roger Jones, P.Eng.
Thornhill, Ontario,
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