water in coolant tank?

hi, i sorta accidently added a little bit of water into my coolant tank today. it was by mistake. its a 2002 corolla. it was about less than 1/4 of a half litler bottle of water. is anything going to happen? im scared lol...

No. Nothing will happen. Your tank would freeze if it were the middle of winter in the north. If you have some, add an equal amount of antifreeze to make things equal. if you don't have any, odd are that much water won't bother anything anyway.

thanks. idk the box said dont add water. im guessing that means it was PRE MIXED? isnt coolant supose to be like 50 50?

Yes, actually better than 50:50. That is the minimum. 60:40 antifreeze:water is recommended. The small amount of water you added is not a serious issue. Add some pure antifreeze and forget about it.

alright THANKS!!

You're welcome