I have some antifreeze in the shed which is 20% methanol and the rest 'glycol'. Would it be hard to separate out the methanol? I presume glycol isn't a good thing to add to petrol.
What about methylated spirits? That's ethanol / methanol and so I'd have thought OK to add to petrol in smallish quantities.
I just wondered! Does this make a change from, Can I run my diesel on vegetable oil???