Occasional leaded fuel and O2

[Clay B]

Doubtless this has been discussed before, but...

If I use 100LL Avgas on occasion, interspersed with tanks of 92 octane
pump fuel, how much will the lifespan on my (heated Bosch) O2 sensor be
reduced? What is the failure mode? Will I be able to see it coming?

Anyone else have experience using leaded fuel with their O2 sensor?

I use the Autronics ECU.

- Clay

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