Can wd 40 be used for window cleaner?
No, WD-40 should not be used as a window cleaner. WD-40 is a water-displacing lubricant and degreaser, and is not designed for cleaning glass surfaces. It may leave a greasy residue on the glass and may damage the window seals or frames. For cleaning windows, it is best to use a specifically formulated glass cleaner or a mixture of water and vinegar.