problem with O2 sensor and manifold

[steelerdude99]

I am a little skeptical of this mechanic's story. If the manifold was rusty, I would use an acetylene torch to heat up the manifold around the sensor. As the sensor was suspected of being bad, it is expendable, cut off the back of the sensor and use a regular 6-point socket on it after the manifold is cherry red. Not the "split" sensor socket, a 6-point and some good leather gloves.

All 20/20 hindsight, but a manifold would have to be pretty rusty to be weakened. Aren't they made of cast iron? But anyhow, if the mechanic's warning there might be a problem says steps should be taken to not have a problem.

chuck / just my $0.02

ps: And "part alone would cost me $1700" ... really?