Gas line antifreeze?

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,
  Click to see the full signature.

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.