Do I add coolant or water to increase/decrease freeze and boiling points?

1997 FORD EXPEDITION

220,201 MILES

ROYCAR71

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I just did coolant flush. my freeze and boiling points are not accurate. Do I add coolant or water to increase/decrease freeze and boiling points?

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Jun 21, 2012 at 9:44 AM

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JACOBANDNICKOLAS

AUTOMOTIVE REPAIR CONTRIBUTOR
110,190 POSTS

Hi,

This is a hard question to answer simply because I'm not sure what the ratio was that you installed already. The strongest mixture for engine coolant/anti-freeze is a 50/50 mixture.

Here is a link you may find of interest. It explains the general topics related to engine coolant.

https://www.2carpros.com/articles/engine-coolant-59420607

I hope this answers your question. If you added something other than a 50/50 mixture, compensate by adding what it takes to reach the 50/50 dilution.

Take care,

Joe

Jun 28, 2021 at 5:11 PM