Are There Cars That Don't Require Coolant Changes for 10 Years?
2 Answers
There are cars that don't require coolant changes for 10 years, typically some luxury vehicles such as newer Mercedes-Benz models. How to choose coolant: The basic indicators of coolant are its freezing point and boiling point. On the market, coolants come in specifications with freezing points of -15°C, -25°C, -30°C, -40°C, etc. Generally, it's advisable to choose a coolant with a freezing point at least 10°C lower than the lowest temperature in your region. Methods to determine if coolant is low: Observe the coolant warning light on the dashboard. If it lights up, it's likely due to low coolant, though it could also be caused by excessively high engine temperature. Check the coolant reservoir. If the fluid level is below the minimum mark (MIN), do not continue driving and add coolant promptly. Check the water level markings on the coolant overflow tank. The normal coolant level should be between the maximum and minimum marks. To determine if coolant is low, check the markings. If the coolant is below the minimum mark, it indicates a shortage.
I've been driving for nearly twenty years and have seen many car owners procrastinate on changing their coolant, thinking it's unnecessary. Indeed, some go a full decade without replacing it, but this is a major issue. Coolant doesn't just prevent freezing in winter—it also protects the engine's water passages from corrosion. Over time, the additives deplete, acidity rises, and it can corrode metal components like the radiator, water pump, and small hoses. Once clogged or leaking, the engine can overheat and fail at any moment, costing thousands to repair. I’ve personally experienced this—when the coolant turns cloudy and yellowish, it’s a clear warning to replace it. Modern car manuals now recommend changing it at most every five years, but harsh driving conditions or high temperatures can shorten its lifespan. Don’t cut corners—timely maintenance saves both hassle and money.
