[OAC_Sparky]

Sons, being more than a few years your senior, let me impart some money savings to you.

Trade secret. Gasline antifreeze is something they call Methyl Hydrate. It's a paint thinner.

You can get it at any hardware store, crappy tire, etc. for about a buck or two a litre. Enough to last you the whole winter.

If it makes you feel a bit better, you can fill up the little bottles, and laugh at the general public paying full price....