Will stop leak temporarily help with a blown heater core

Asked by Dec 23, 2016 at 12:38 PM about the 1996 Subaru Legacy 4 Dr LS AWD Wagon

Question type: Maintenance & Repair

Pretty sure it is the heater core am going to replace it I just need to know if stop
leak will help for awhile

3 Answers


No reason why it shouldn't. You could also cap off the heater lines and adjust coolant level until you get a new heater core.

1 people found this helpful.

It might, but it may or may not cause problems elsewhere. The best fix is replacing the bad heater core. I would never use the stop leak products in my own vehicle, but many people have good luck with them.

1 people found this helpful.

Alumaseal has worked great for me when I have needed it.

1 people found this helpful.

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