Washer fluid questions

[Spinifex]

Why would the 2018 Owner manual SPECIFICALLY say not to use distilled water with the washer fluid? It says use clean clear water.

When using the windscreen washer system (pulling the lever), do your wiper blades grind across the dry screen once before the fluid gets to the glass?

Not sure about the distilled question, but there's usually about a second delay, so the sprays get to wet the screen before the blades wipe across.

Depends if your washer sprays are directed correctly at the screen though... and a mate of mine told me once that he turns off his auto-wipers, as they usually operate on a barely-wet screen, the first instance a single rain-drop hits it !!! So he waits until the screen is properly wet, before operating the wipers manually.
Sounds good in theory..... and with wiper blades being pretty expensive, I can understand his reasoning.

[notaGolfR]

Not sure about the distilled question, but there's usually about a second delay, so the sprays get to wet the screen before the blades wipe across.

Depends if your washer sprays are directed correctly at the screen though... and a mate of mine told me once that he turns off his auto-wipers, as they usually operate on a barely-wet screen, the first instance a single rain-drop hits it !!! So he waits until the screen is properly wet, before operating the wipers manually.
Sounds good in theory..... and with wiper blades being pretty expensive, I can understand his reasoning.

Useful reply thanks Spinifex. Happy New Year.