Can the windscreen washer concentrate be used undiluted?

The undiluted or under-diluted washer fluid concentrate is thick and often leaves a bothersome film on the glass. If the screenwash fluid is too strong, it may also harden and ruin the rubber parts of the wiper blades. A-Katsastus’ screenwash fluids intended for normal weather are pre-diluted and ready for use. For particularly severe sub-zero temperatures, we also sell a dilutable concentrate. When you purchase screenwash fluid from us, we will refill your vehicle’s screenwash tank for you.

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