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Safe to use penetrating oil when removing O2 sensors?

  • Sure thing -

    Votes: 3 42.9%
  • No way!

    Votes: 1 14.3%
  • Won't make a difference

    Votes: 1 14.3%
  • Buy new sensors just to be on the safe side

    Votes: 2 28.6%
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Mixed results will probably be posted. Silicon based penetrating products will mess with the oxygen sensor if it soaks to the ceramic part. That said, I've had great success with a little PB Blaster pointed directly towards the threads. I've also had success removing them while the exhaust is hot, just be careful where your arms and hands touch.
 
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