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Invisible Glass Rain Repellent Washer Fluid Additive is designed to turn your washer fluid into rain repellent, which enhances driving visibility and safety in wet weather. It applies more rain repellent each time you spray your windscreen and improves the cleaning effectiveness of your windscreen washer fluid. Invisible Glass Washer Fluid Additive mixes easily with plain water or can be added to windscreen washer fluid. You can add it directly to your reservoir or mix in a separate container before adding. Just add 120ml to every 4 litres of plain water or washer fluid in reservoir.
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