Yes, windscreen washer fluid evaporates significantly in the UAE, and much faster than in milder climates. The primary cause is the extreme summer heat, where under-hood temperatures can exceed 70°C, and constant use of air conditioning accelerates the process. Based on common observations from workshops in Dubai and Sharjah, a reservoir filled to the brim in June can be nearly empty by late August without any usage, purely from evaporation. For a typical sedan like a Toyota Camry or Nissan Sunny, this translates to needing a top-up every 4-6 weeks during summer, compared to every 3-4 months in winter. Using a concentrated fluid mixed with distilled water, rather than pre-mixed solutions, can be more cost-effective for frequent refills. The RTA Dubai's vehicle inspection guidelines emphasize the critical function of washer systems for safety, especially on dusty roads leading to desert areas or during sudden sand showers. Furthermore, the UAE Ministry of Energy and Infrastructure's reports on climate conditions corroborate the accelerated rate of evaporation for automotive fluids during the extended hot season. For a family car covering 25,000 km annually in the UAE, the cost of washer fluid is a minor but recurring part of vehicle upkeep, with an annual expense of approximately 60-80 AED for a responsible driver who maintains visibility as a safety priority.
