Concentrated windscreen washer 1 litre

A concentrate that cares as much as it cleans: Sisbrill Concentrated Windscreen Washer Fluid 1 L

Most windscreen washer fluids on the market contain alcohols, glycols, and other aggressive components that, with continued use, cause hazing and micro-cracks in the polycarbonates and acrylics of headlights and windscreens. The Sisbrill Concentrated Windscreen Washer Fluid is specifically formulated to eliminate that risk: free from aggressive compounds, it is completely safe for all optical elements of the vehicle.

Main features

• Concentrated formula 1:20: each litre of product yields up to 20 litres of ready-to-use windscreen washer fluid.
• Free from aggressive alcohols and glycols: protects polycarbonates, acrylics, and rubbers of headlights and windscreens.
• Deep cleaning: removes insect marks, wet road grime, and suspended dust.
• No whitish or foamy residues: visibility remains completely clear after each use.
• Quiet wipers: the formulation allows the rubbers to glide smoothly, without squeaking.
• Contents: 1 litre.

Instructions for use

Direct use in the windscreen washer reservoir

1. Pour 200 ml of Sisbrill Concentrated Windscreen Washer Fluid into your vehicle's reservoir (standard size 4-5 litres).
2. Add water to fill to the level.

Preparing a reserve container

1. Add 200 ml of concentrate to a 5-litre container.
2. Fill with water to the total capacity of the container.

Advice for hard water areas

If you live in an area with hard water, use distilled or osmosis water to avoid limescale deposits in the reservoir and the washer nozzles.

Who is it intended for?

It is especially recommended for drivers who want to keep the glass and headlights of their vehicle in perfect condition over the long term, without suffering the silent deterioration caused by conventional products. It is also very practical due to its performance: with just one litre, you cover many months of regular use.

Frequently asked questions

What is the dilution ratio for the concentrate?

The recommended ratio is 1:20, that is, 200 ml of concentrate for every 4 litres of water. This way, you obtain up to 20 litres of final product from each 1-litre container.

Is it compatible with all types of windscreens and headlights?

Yes. Being free from alcohols, glycols, and other aggressive compounds, it is safe for glass windscreens and for optics and covers of headlights made from polycarbonate or acrylic.

Can I use it in the rear windscreen washer reservoir?

Yes, in the same way as in the front reservoir: always respect the indicated 1:20 ratio.

Why use distilled water if I live in a hard water area?

Water with a high calcium content can cause deposits in the reservoir and clog the washer nozzles over time. Distilled or osmosis water prevents this problem and extends the life of the system.

Is it suitable for cleaning glass by hand, without using the windscreen washer system?

The product is formulated for use in the vehicle's windscreen washer system. For manual glass cleaning, there are other specific products in the Sisbrill range adapted for that use.

The Sisbrill Concentrated Windscreen Washer Fluid (1 L, ref. A2667) delivers up to 20 litres of ready-to-use solution from a single bottle. Its alcohol- and glycol-free formula safely cleans polycarbonate and acrylic headlight covers, windscreens and all glass surfaces without causing hazing or micro-cracks. Ideal for drivers who want streak-free visibility, quiet wiper blades and long-term protection for their vehicle's optical components. Dilution ratio 1:20.