Translation guide
A substance added to a liquid (usually water) to lower its freezing point, commonly used in car engines.
The liquid used in car radiators to prevent freezing and overheating.
Any chemical that lowers the freezing point of a liquid, not necessarily for engines.
In everyday conversation about cars, クーラント (coolant) is very common and understood as the antifreeze mixture. 不凍液 is more precise but slightly technical.
The standard technical term for antifreeze, especially for engines.
車の不凍液を交換する必要があります。
I need to change the car's antifreeze.
Loanword from 'coolant', often used interchangeably with antifreeze in automotive contexts.
クーラントの量をチェックしてください。
Please check the coolant level.
Literally 'cooling water', but often refers to the coolant mixture in a car. May not explicitly mean antifreeze, but contextually understood.
冷却水が漏れているようです。
It looks like the coolant is leaking.
Same term as above, but can be used in broader contexts like industrial processes.
この不凍液は食品工場でも使われています。
This antifreeze is also used in food factories.
Literally 'freezing prevention agent', a more descriptive term used in technical or industrial settings.
道路の凍結防止剤として塩化カルシウムが使われる。
Calcium chloride is used as a de-icing agent for roads.