SONAX XTREME Windscreen Cleaner 1:100 Washer Fluid Concentrate 250ml

Up to 25 Liters of Windshield Wiper Fluid from One Bottle — SONAX XTREME Windscreen Cleaner 1:100 as a Super Concentrate

What makes SONAX's super concentrate wiper fluid so special? The highly concentrated product is diluted with water at a ratio of 1:100 — a 250ml bottle yields up to 25 liters of ready-to-use windshield washer fluid that removes insects, road grime, and films streak-free.

You hardly consciously buy windshield wiper fluid — until the tank is empty, and you either have to rely on something on the road or reach for expensive 5-liter canisters at the hardware store. The SONAX XTREME Windscreen Cleaner 1:100 solves this problem with unusual efficiency: The super concentrate in the practical 250ml bottle is diluted at a ratio of 1:100 — this corresponds to 2.5 ml per 250 ml of water, or conversely: one bottle is enough for 25 liters of wiper fluid. This significantly saves space, weight, and costs compared to classic ready-to-use wiper fluids.

• 1:100 Concentration Ratio — One Bottle, Up to 25 Liters. The extreme concentration ratio is the central advantage of this product. Compared to a 5-liter canister of ready-to-use wiper fluid, the 1:100 concentrate requires only a fraction of the storage volume and transport weight. For workshops and detailing businesses that refill wiper fluid for customer vehicles, the 250ml bottle allows for compact storage and precise dosing without transferring large quantities.
• Streak-Free Visibility Cleaning Without Residues. The concentrate's formulation is designed for complete residue breakdown after drying — no wax film, no surfactant streaks on the windshield after wiping. This property is crucial for driving safety, as film residues, especially in oncoming light, significantly impair the field of vision.
• Effective Against Insects, Road Grime, and Road Salt Residues. The active cleaning surfactants in the concentrate emulsify insect residues, grease residues from exhaust fumes, and road grime that accumulate on the windshield. The highly concentrated formulation fully develops this cleaning effect even with extreme dilution, as the active ingredients are dosed accordingly high.

Clear vision on the road is not a comfort feature, but a safety requirement. A dirty windshield reduces the driver's reaction time, as contours and obstacles in the dirty film are recognized later. This is especially true in rain, when insect remains and road dust combine with moisture and are spread by the windshield wipers into a greasy film instead of being cleanly wiped away. A powerful windshield washer fluid that is already active in the windshield washer reservoir prevents exactly this effect: It dissolves dirt before wiping and allows the windshield wiper a clean, streak-free wiping path — with every wipe.

Detailing1 Pro Tip: For optimal results, mix the Windscreen Cleaner 1:100 directly in the windshield washer reservoir: Fill the tank with tap water and then add the appropriate amount of concentrate — for a typical 3-liter tank, that's 30 ml of concentrate. For stubborn insect residues on the front windshield, the concentration can be moderately increased (1:50 to 1:30) — more cleaning agent will then be active per wipe when the windshield wiper is in spray mode. The 250ml bottle is perfect for carrying in the trunk when traveling, as it takes up little space and provides enough supply for long distances.

Super Concentrate Technology of Windscreen Cleaner 1:100 — Mode of Action and Formulation Logic

The SONAX XTREME Windscreen Cleaner 1:100 uses a highly concentrated surfactant and cleaning agent formulation that, when diluted with water at a ratio of 1:100, results in a fully functional wiper fluid. The concentration ratio is not arbitrary: The active ingredients are dosed so high that after dilution to 1:100, there is still enough surfactant, dewatering agent, and cleaning substance present to fully act on the windshield and evaporate with low residue after drying.

The streak-free finish is achieved through the targeted use of dewatering agents (surfactants with hydrophobic properties) that distribute the water evenly and allow it to run off in a controlled manner. Without these additives, the water would remain in drops and puddles on the windshield during wiping and leave streaks when drying. The dewatering agents in the Windscreen Cleaner 1:100 ensure that the wash water is thinly distributed over the entire windshield surface and dries in a uniform, streak-free layer.

The super concentrate logic follows a clear principle of product development: The higher the concentration ratio, the lower the proportion of water in the finished product, the smaller the packaging, and the lower the ecological footprint of transport. With the 1:100 concentrate, SONAX is relying on a format that is already established in other cleaning agent categories but is still little used in the wiper fluid sector — a clear advantage for environmentally conscious consumers and professionals who want to optimize storage space.

For tough situations — heavy insect contamination in summer, road salt residue in winter — the concentration can be temporarily increased to 1:50 or 1:30. This flexibility, which a ready-to-use product does not offer, makes it possible to cover different cleaning intensities with a single concentrate and adapt the product seasonally.

The surfactant formulation of the Windscreen Cleaner 1:100 is designed for biodegradability and material compatibility. The ingredients are chosen so that rubber seals on windshield wipers, plastic wiper frames, and paint edges of the windshield frame are not attacked. This is not a matter of course with highly concentrated formulations — inexpensive private-label concentrates sometimes use aggressive solvents that can make rubber brittle. SONAX systematically tests material compatibility as part of product development and thus provides a reliable basis for continuous use in commercial vehicle fleets.

Correct Application of Windscreen Cleaner 1:100 — Dosing, Filling, and Seasonal Use

Dosing the 1:100 concentrate is easy to calculate: For a 3-liter windshield washer tank, 30 ml of concentrate is needed; for a 5-liter tank, it's 50 ml. A simple kitchen syringe or a graduated dosing bottle helps to measure the exact amount without weighing. In practice, however, the concentration can also be slightly increased without causing damage — the Windscreen Cleaner 1:100 is generously formulated and tolerates moderate overdosing.

For summer use, where insects and road grime dominate, the standard dilution of 1:100 is recommended. For journeys to insect-rich areas or dusty country roads, the concentration can be increased to 1:70 to 1:50. The SONAX XTREME Windscreen Cleaner "Summer" is the ready-to-use alternative for those who do not want to dose — but the concentrate offers a much better price-performance ratio in comparison.

After filling the tank, the effect of the fresh wiper fluid can be checked immediately: A brief activation of the windshield wiper on a dry windshield shows whether the concentrate is evenly distributed and works streak-free. If there is too little concentrate, streaks can occur; with the right amount, there is a uniformly clear picture. This simple effectiveness check makes setting the correct dosage uncomplicated.

On the front windshield, which is exposed to direct sunlight, streak-free performance is particularly relevant. Wiper streaks reflect sunlight and can significantly restrict the driver's field of vision — especially in oncoming light situations during morning or evening drives. A windshield washer fluid that leaves no residues after drying is therefore not just a comfort feature, but a direct contribution to driving safety.

Anyone who uses the concentrate in a vehicle pool or a commercial fleet benefits from the fact that a standardized dosage per vehicle type can be defined once and then applied repeatedly. A small sign in the storage room with tank volume and required concentrate quantity per vehicle model is sufficient — employees do not need chemical knowledge but simply follow the quantity key. This significantly reduces training effort compared to more complex care systems.

Areas of Application for Windscreen Cleaner 1:100 — All-Season Use and Special Cases

The Windscreen Cleaner concentrate 1:100 is primarily optimized for the summer season — it is not an antifreeze and is not suitable for temperatures below freezing. In summer, where insects, pollen, exhaust residues, and road dust affect the windshield, the concentrate is the most efficient means for clear vision. For the winter season, a winter screenwash should be used.

The 250ml bottle is ideal for the glove compartment or trunk — an emergency refill supply that takes up hardly any space. Those who are traveling long distances or abroad can simply carry the concentrate and buy water on the go, instead of having to transport heavy wiper fluid canisters. This travel logic is one of the most practical advantages of the super concentrate compared to ready-to-use alternatives.

For detailing businesses and workshops that fill the windshield washer tank of customer vehicles as a service, the 1:100 concentrate is economically optimal: Storing several 250ml bottles is more space-saving than stocking 5-liter canisters, and the concentrate is easier to dose and portion.

Another, often overlooked area of application is use in motorhomes and campervans. Motorhome drivers often travel long distances through different climate zones, where insect density and dust pollution vary greatly. The super concentrate allows one to get by with a single small bottle for the entire travel season — and to adjust the concentration depending on the section of the route. At the same time, the compact format saves considerable space in the limited storage space of a motorhome compared to carrying canisters.

Windscreen Cleaner 1:100 in Comparison — Concentrate vs. Ready-to-Use and Other Products

Compared to the ready-to-use SONAX XTREME Windscreen Cleaner "Summer", the 1:100 concentrate offers clear advantages primarily in terms of price and storage volume. If you buy a 5-liter bottle of ready-to-use wiper fluid, you pay significantly more per liter compared to the concentrate version. The ready-to-use variant, on the other hand, offers its convenience argument: no mixing, no dosing, immediately ready for use.

Compared to commercially available inexpensive wiper fluids, the XTREME concentrate distinguishes itself by its formulation-optimized streak-free performance. Inexpensive products often contain insufficient dewatering agent components and leave visible films on the windshield after drying. The SONAX quality standard — also in the concentrate variant — ensures that the cleaning performance and streak-free finish are maintained even after extreme dilution.

For external windshield cleaning — manual cleaning of the windshield with a cloth — the concentrate is also suitable as a mixture with water in a spray bottle. A little concentrate dissolved in water and applied to a SONAX PROFILINE Microfiber Cloth "Glass" effectively removes windshield coatings. For a more thorough glass cleaning and care, the SONAX XTREME Window Clear is available as a dedicated glass cleaning product.

The price comparison is particularly clear when comparing the cost per liter of ready-to-use wiper fluid: A typical 5-liter canister costs about 3-5 euros in stores, which results in 0.60-1.00 euros per liter. The 250ml concentrate yields 25 liters at a comparable price — so less than 0.50 euros per liter with a significantly superior cleaning result. This is an argument that convinces even drivers who have not actively looked for a concentrate before.

Buying SONAX XTREME Windscreen Cleaner 1:100 — Who Benefits from the Super Concentrate

The super concentrate is aimed at anyone who wants to buy and store their wiper fluid economically — private drivers who keep the concentrate in the glove compartment, workshops and detailing businesses that service customer vehicles, and travelers who do not want to transport ready-to-use wiper fluid on trips abroad.

It's worth getting started with the SONAX XTREME windscreen care range: With the Windscreen Cleaner 1:100 as a wiper concentrate, the Window Clear as a glass cleaner for manual exterior cleaning, and the Microfiber Cloth "Glass" for residue-free wiping, you have all the tools for clear vision year-round in a compact package. The 250ml bottle of Windscreen Cleaner 1:100 is sufficient for an entire summer season with normal use — a supply that you hardly notice until it's gone.

For those who value a complete overview of the SONAX windshield care system: The concentrate covers regular wiping operations, while glass cleaners and glass sealants take care of manual deep cleaning. This dichotomy — automatic wiper fluid cleaning and manual glass preparation — makes it possible to maintain consistently clear windows with minimal effort, without the need for complex care protocols or expensive specialized services. The super concentrate is the most economical entry into this system.