"CAUTION
Use only windshield washer fluid meant for automotive vehicles. Using other substances, such as untreated water, can result in bacterial growth within the climate control system resulting in odor or potential damage that is not covered by warranty."
From the owner's manual. Nothing special about Tesla windshield washer fluid, except many have complained the OEM factory fill isn't great.
I like this:
Nexzett Kristall Klar Windshield Washer Fluid Concentrate 250 ml - One bottle makes 16 gallons of powerful washer fluid! Developed for leading European automotive manufacturers, Nexzett Kristall Klar is 100 times more concentrated than regular blue ...
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