Where to buy methanol/water mix, or is wahser fluid okay?

[pomme]

Hiya,
I am currently installing a injection kit onto my turbo vw r32, and am just wondering where you can buy meths. I have phoned around some aeroplane model shops nad htey dont know. But one maybe able to supply me though there dealers. But is there anywhere that will sell it off the shelf, ie band q, halfords etc etc?

Or do you know if its okay to use vw washer fluid?

cheers
andrew

ps here is a pic of my car: