I'm at 52K and just changed my front one. Supposedly they have a
nominal lifespan of around 60K but depending on driving habits, whether
they get dirty, etc. that can change. Some people have gone much longer.
Geoffrey Hackbart wrote:
> Sorry, I have been out of the loop for quite a while,
> but when should you change your O2 sensors? How many
> miles? Just wanting to know. I think my mileage is
> going south.
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