Warning Signs of Low Coolant in a Car?

[Ida]

When the coolant level is insufficient, a warning light resembling low radiator fluid level typically appears on the car's dashboard. Below are some introductions about coolant: 1. Alcohol-based coolant: Uses ethanol (commonly known as alcohol) as an antifreeze agent. It is inexpensive, has good fluidity, and is simple to prepare, but it has a low boiling point, is prone to evaporation loss, has an easily increased freezing point, and is flammable. It is now gradually being phased out. 2. Glycerin-based coolant: Features a high boiling point, low volatility, is non-flammable, non-toxic, and has minimal corrosiveness. However, it is less effective at lowering the freezing point and is costly, so it is only used in a few Nordic countries.