If I am in the begininging of possibly needing a replacement for my catalytic converter about how many miles before I might need one? I am at about 120,000 now.
I have a few questions.The P0420 showed up and when I took it to my mechanic he said down the road I would need a new catalytic converter. He said use it till I have to get it. I took a trip to Santa Fe from Norman Oklahoma and I did not have any issues. So I don't know?