# Water in 2009 Mazda 323 engine coolant reservoir

**URL:** <https://community.cartalk.com/t/water-in-2009-mazda-323-engine-coolant-reservoir/114077>\
**Category:** Maintenance/Repairs\
**Tags:** mazda\
**Created:** [March 20, 2018, 8:44pm UTC](https://community.cartalk.com/t/water-in-2009-mazda-323-engine-coolant-reservoir/114077 "2018-03-20T20:44:44Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![MarlenCarvalho](https://avatars.discourse-cdn.com/v4/letter/m/35a633/32.png) [@MarlenCarvalho](https://community.cartalk.com/u/MarlenCarvalho)\
**Post date:** [March 20, 2018, 8:44pm UTC](https://community.cartalk.com/t/water-in-2009-mazda-323-engine-coolant-reservoir/114077/1 "2018-03-20T20:44:44Z")

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I accidentally poured water into the engine coolant reservoir and wondering what kind of damage I’ve done if any?

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**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\
**Post date:** [March 20, 2018, 8:54pm UTC](https://community.cartalk.com/t/water-in-2009-mazda-323-engine-coolant-reservoir/114077/2 "2018-03-20T20:54:00Z")

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If your coolant was at the proper ratio a little water in the reservoir will not make much difference. But I have to ask, what did you intend to do with the water in the first place ? If you meant to fill the wind shied washer tank why were you not using washer fluid?

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [March 20, 2018, 8:54pm UTC](https://community.cartalk.com/t/water-in-2009-mazda-323-engine-coolant-reservoir/114077/3 "2018-03-20T20:54:21Z")

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No damage at all. Coolant IS 50% water and the rest anti-freeze.