There have been reports of washer fluid reservoirs harbouring the Legionella bacterium, particularly when plain tap-water has been used as a top-up. Washing the windscreen can allow infective aerosols to enter the car. Legionnaires' Disease can be fatal.
Washer fluid made up from 70% demineralised water and 30% Windex plus a little extra detergent should discourage bacterial growth. There are other suitable additives, such as isopropyl alcohol, which also acts as anti-freeze in those climates that require it.
Washer fluid made up from 70% demineralised water and 30% Windex plus a little extra detergent should discourage bacterial growth. There are other suitable additives, such as isopropyl alcohol, which also acts as anti-freeze in those climates that require it.
