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Leaking Heater Core………
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Lars(wi) View Drop Down
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Joined: 14 Sep 2009
Location: Permian Basin
Points: 7611 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Lars(wi) Quote  Post ReplyReply Direct Link To This Post Topic: Leaking Heater Core………
    Posted: 31 Mar 2025 at 4:49pm
2009 Ford Explore, 2wd. Not a horrible leak, more a constant drip. One independent shop claims 8 hr job to replace. Unfortunately we are traveling(just my luck), been topping off every couple hours, about 3/4 a gallon today. Kinda hate to use Bar’s Leaks or similar, won’t be back to base for about 10 days or so. Got plenty of coolant with me. Have been checking on it every hour or so.
I tried to follow the science, but it was not there. I then followed the money, and that’s where I found the science.
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DanWi View Drop Down
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Joined: 18 Sep 2009
Location: wttn
Points: 1894 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DanWi Quote  Post ReplyReply Direct Link To This Post Posted: 31 Mar 2025 at 5:27pm
Back in the day you would have just disconnected the lines at the firewall and made a loop bypassing the heater. Guess It's not that easy on newer vehicles,🙁
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
Location: illinois
Points: 84887 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 31 Mar 2025 at 5:43pm
I would not be afraid to add the Bars Leak.. Small leak with lots of driving... maybe just 1/3 or 1/2 bottle and see what happens.
Like them all, but love the "B"s.
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DMiller View Drop Down
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Joined: 14 Sep 2009
Location: Hermann, Mo
Points: 32869 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DMiller Quote  Post ReplyReply Direct Link To This Post Posted: 31 Mar 2025 at 6:52pm
Originally posted by steve(ill) steve(ill) wrote:

I would not be afraid to add the Bars Leak.. Small leak with lots of driving... maybe just 1/3 or 1/2 bottle and see what happens.

Agree, if slows the incessant drip to a daily drip that will save time and some money as well.  Newer autos as my 2010 Impala, Core is NOT readily accessed, requires Removal of Entire Dash to drop the Heater Box.
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Joined: 20 Aug 2024
Location: Manchester UK
Points: 643 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ekjdm14 Quote  Post ReplyReply Direct Link To This Post Posted: 25 minutes ago at 4:48am
Ground black pepper, about 1 Oz.  Works well for me, still limping along a rotten radiator for about 6 months like this & it's slowed from having to top up every couple hours of running to checking daily/topping off once every 2 or 3 days.

Modern stuff can be a real pain for access, he11 with modern coolants why are we even seeing heater cores still fail? China?
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