What does the big F on the HOWO dashboard mean?

1 Answers
VonAdriel
07/30/25 2:28am
The appearance of a big F indicates that the water temperature is too high or there is insufficient coolant. Below are specific details about coolant: 1. Definition: The full name of coolant should be antifreeze coolant, meaning it has antifreeze functionality. Coolant prevents the liquid from freezing and expanding in cold winter conditions, which could crack the radiator or damage the engine cylinder block or head. 2. Function: Engine coolant has the characteristics of antifreeze, anti-boiling, anti-corrosion, anti-scaling, and being foam-free, unaffected by seasons or regions. 3. Quality Standards: The primary measure of coolant quality is its antifreeze performance. The freezing point of water is 0°C, while standard coolants can typically reach -40°C. High-quality coolant should achieve around -60°C, which is a key indicator of coolant quality. Another factor is the boiling point of the coolant. The boiling point of water is 100°C, whereas coolant should at least reach 108°C or higher. This means that the lower the freezing point and the higher the boiling point, the greater the temperature range, indicating better coolant quality.
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