I ran 1/2 tank 94 octane unleaded and mixed in 5 gallons 110 octane turbo blue leaded gas.

My O2's are shot.

But my main concern is the Catalyitc convertors, do you think that 5 gallons would clog them?

(It was explained to me like this)
Picture a metal window screen, Now blow Solder all over it, the more solder you get on it the less air (exhaust) will flow through it.

Is 5 gallons enough to clog them?

 

This will not completly answer your question but its a start.
I have ran a total of 5 gallons of leaded fuel(110) in the past 9 months. 3 gallons one time and 2 gallons another. My truck a little over a week ago ran as fast or faster than it ever has at the track. Sooo, the five gallons I have used havent cloged the cats yet! Dont know about the 02 sensors.

 

I have ran about 15 gallons of leaded 110 in my truck in intervals 3-4 gallons mixed at a time. No problems yet but the gas is free for me.

 

theperfectstrom, Latemodelracer...

Did it effect your O2 Sensors?

 

hopefully not its all running fine right now

 

I have run about 30 gallons on leaded fuel through my truck this year, so far the 02's are just fine. My cats on the other hand are gone, just hollow shells

 

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theperfectstrom, Latemodelracer...

Did it effect your O2 Sensors?

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No effect on sensors that I KNOW of.
I have not checked them in any way however.

 

how loud is that over whatever you have for exhaust with complete Cats?