Said It Here

Did overheating ruin my engine or just the radiator?

Severe overheating creates uncertainty about whether the issue is just a radiator change or has expanded into the gasket and engine block. Drivers are left guessing if the block is still good, making them hesitant to drive far to a machine shop only to find out it is no good. Even when shutting the engine down quickly after seeing vapor, owners are left hoping they managed to dodge major damage.

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
    towing the vehicle to a dealer
  2. 2
    shutting the engine down quickly upon noticing vapor
  3. 3
    adding water to check for leaks
  4. 4
    Driving to a machine shop for professional inspection and measurement
  5. 5
    Trying to visually inspect or guess the condition without proper measuring tools

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/MechanicAdvice2 people · September 2026

“I’m not too sure if the block is still good or not and don’t want to drive 40 minutes to a machine shop just for them to tell me it’s no good”source ↗

Upbeat_Engine_5950 · r/MechanicAdvice · 3 upvotes

“What is the possibility that it will be more than a radiator change and expand to gasket/engine area?”source ↗

Sea-Jeweler-967 · r/MechanicAdvice · 1 upvotes

“I stopped the engine around one minute after I saw an obvious vapor today, as soon as I pulled over. Hope I could dodge it…”source ↗

Sea-Jeweler-967 · r/MechanicAdvice · 1 upvotes

Where this came up

People with this problem also raised