Cheapest windshield washer fluid per Gallons

Best deal: $4.97 per gallon (66.8% below the median) — Rain-X RX68106 PREM DE-ICER Washer Fluid

Price range: $4.97 – $399.84 per gallon across 27 offers. Median sits at $14.99.

Top brands showing: Rain, Prime Guard, Windex Refill.

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