Said It Here

Can a temporary head gasket fix last for a few months?

Temporary head gasket repairs and sealer treatments leave drivers unsure whether the engine will keep burning coolant, running hot, or leaking fluid into the oil to form a milky mixture. This uncertainty makes it difficult to know if a short-term fix will reliably hold up until they can get a new car or if it will demand ongoing oil changes and fluid monitoring.

What people tried

Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.

  1. 1
    Adding coolant twice a week
  2. 2
    Using pour-in head gasket sealants like Blue Devil as a temporary fix
  3. 3
    Saving money for a proper head gasket replacement job
  4. 4
    Performing compression tests, leak-down tests, or chemical exhaust gas tests

In their words

Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.

r/AskMechanics1 person · September 2026

My question is will having a shop put a head gasket in last until then, or will it keep burning coolant regardless.source ↗

wood2010 · r/AskMechanics · 1 upvotes
r/MechanicAdvice1 person · September 2026

I was told that there was alittle bit of milky stuff in my oil which probably meant that coolant got into it.source ↗

I have been losing coolant which was causing car to run hot recently.source ↗

My main question is when I change my oil an use the head gasket sealer treatment, will I have to change my oil again after the whole thing.source ↗

No_Hunter5854 · r/MechanicAdvice · 1 upvotes

Where this came up

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