Originally Posted By Thumperdart
Originally Posted By csk
low lead will still kill an o2 sensor.


I'm still on the same 02 from 6+ years ago and it`s fine............


That might be, but O2 sensors were never designed to run with leaded fuels. The chances of fouling a sensor are pretty high on a street motor that might idle around a lot more than a race engine at temp.

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