# Low Coolant (reservoir)

**URL:** <https://community.cartalk.com/t/low-coolant-reservoir/91687>\
**Category:** Maintenance/Repairs\
**Created:** [November 12, 2015, 8:14am UTC](https://community.cartalk.com/t/low-coolant-reservoir/91687 "2015-11-12T08:14:05Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Jman136](https://avatars.discourse-cdn.com/v4/letter/j/3ab097/32.png) [@Jman136](https://community.cartalk.com/u/Jman136)\
**Post date:** [November 12, 2015, 8:14am UTC](https://community.cartalk.com/t/low-coolant-reservoir/91687/1 "2015-11-12T08:14:05Z")

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Hey all,

So, I had my 2007 Acura TSX serviced at my local Honda dealership a few weeks ago. At the time of service, my maintenance minder called for a coolant flush (100k miles). I did that service, and noticed today that my overflow reservoir coolant level is sitting at the minimum level line when the engine is cold. I was going to stop by Honda and see if they would top this off for me. However, I was just wondering if it’s ok to be driving around at the min level long-term.

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**Author:** ![keith](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/keith/32/5518_2.png) [@keith](https://community.cartalk.com/u/keith)\
**Post date:** [November 12, 2015, 9:35am UTC](https://community.cartalk.com/t/low-coolant-reservoir/91687/2 "2015-11-12T09:35:59Z")

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Thats where it is supposed to be, when hot, it should be near the max line.

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**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\
**Post date:** [November 12, 2015, 9:42am UTC](https://community.cartalk.com/t/low-coolant-reservoir/91687/3 "2015-11-12T09:42:20Z")

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+1 to Keith’s post. Perfectly normal and correct.

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**Author:** ![common-sense-answer](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/common-sense-answer/32/716_2.png) [@common-sense-answer](https://community.cartalk.com/u/common-sense-answer)\
**Post date:** [November 12, 2015, 10:38am UTC](https://community.cartalk.com/t/low-coolant-reservoir/91687/4 "2015-11-12T10:38:50Z")

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**_On Some Cars The Minimum Level Line Is Marked “Full Cold” And The Maximum Level Line Is Marked “Full Hot.” I Suppose That’s Less Confusing._**

Also, A Coolant Reservoir Is Sometimes Referred To As An “Expansion Reservoir,” Which Also Helps Explain Why The Tank Can Be “Full” At 2 Different Levels, Depending On Engine Temperature.

This is a topic that should be covered in the vehicle’s Owners Manual. Have you checked?

_ **CSA** _

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**Author:** ![missileman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/missileman/32/1366_2.png) [@missileman](https://community.cartalk.com/u/missileman)\
**Post date:** [November 13, 2015, 1:34am UTC](https://community.cartalk.com/t/low-coolant-reservoir/91687/5 "2015-11-13T01:34:16Z")

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+2 to Keith’s post. It’s perfectly normal.