Super K Concentrate Windshield Washer Fluid

Super K Concentrate is an alcohol-free surfactant blend in a 16-oz pump bottle, rated to 32°F — meaning the working solution freezes at the ordinary freezing point of water. The pump dispenses concentrate directly into the reservoir and you add water; distilled water is recommended for best results. At standard strength, three pumps per gallon yields up to 165 gallons from a single bottle — well above the threshold for outstanding concentrate value. Community reviews confirm adequate cleaning of light road film and dust at proper dilution. Streak complaints are minimal at the correct mix ratio. Two documented weak points drag the quality score: no freeze protection in any meaningful sense, and a recurring pattern of pump failures and cap leaks that let the intensely blue dye stain hands, clothes, and garage surfaces.

Best for warm-climate daily drivers who want an unusually cost-effective concentrate and never see freezing temperatures. Skip it if you live anywhere the reservoir could freeze — this product will leave lines blocked by ice. Skip it too if reliable packaging matters; a leaky pump bottle with a dye this intense is a maintenance nuisance in the engine bay.

The SDS §2 classification is NOT CLASSIFIED with no signal word and no product-level GHS hazard codes, making this one of the cleaner formulas in the category. The blue dye stains skin at concentrate strength despite the absence of a product-level skin-hazard classification, so a disposable glove during pour-fill is practical. Environmentally, the fluid is drain-destined — it runs off the windshield into stormwater — and one ingredient carries confirmed aquatic toxicity codes at the ingredient level, applying a moderate environment deduction. No biodegradability confirmation is available from the SDS.