Tesla uses Windshield Washer Fluid Methanol Mix with -20F temperature target and no additives

[betaflame]

I got the information from a service center visit when I couldn't find it online, and I'm putting it here so google will pick it up in a search if someone checks in the future.

For reference I'm in Austin,TX, and it doesn't go below 0F ever, but I think it's just standard.

Autozone and Walmart don't bother selling -20F with no additives here, but walgreens does apparently.