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Frequently asked questions about cars and motorcycles
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Is it possible to use water instead of coolant?

Model: (Various brands) Various
Part: Checks and maintenance

Video tutorial

In this video, you will see if it is possible, in case of emergency, to add water to the coolant reservoir without causing problems to the vehicle. Cooling the vehicle is always relative, as "cold" means 90°C. If you are out of coolant (and find fluid on the ground), you can add plain water in an emergency.

When the engine is hot, open the cap of the reservoir very carefully, and in this case, let the engine idle and add more water. If it leaks directly while pouring, turn everything off and do not drive; it is not worth the risk, you could cause damage.

If the red warning light comes on while driving, stop and check the reservoir. Add water if necessary and monitor what happens.

If the reservoir is full, then you need to switch off and see what occurs. If it comes back on immediately, avoid queues (if possible) and turn the heating to maximum inside.


Updated on 3 September 2026 by ScegliAuto


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by ScegliAuto

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